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MiLB park factors, 2026

Prospect Digest · Research · Updated 29 Oct 2026 · 2024–2026 seasons

A park factor is one number for how much a ballpark helps or hurts hitters. 100 is an average park. Above 100, more runs (or home runs) are scored there than in an average park; below 100, fewer. This table gives every one of the 119 Triple-A, Double-A, High-A and Single-A parks two of them: a runs factor and a home-run factor.

How to read the table

Showing 119 parks · 3-year (2024–2026)

MiLB park factors for runs and home runs, 3-year (2024–2026). 100 = average.
Park MLB club League Runs factor Home-run factorHR factor Runs factor by year, 2024–2026Runs by year
Triple-A park factors (30 parks)
Las Vegas BallparkLas Vegas Aviators · AthleticsTriple-A · Pacific Coast LeagueAthleticsPacific Coast League128+28%157+57%
Greater Nevada FieldReno Aces · Arizona DiamondbacksTriple-A · Pacific Coast LeagueArizona DiamondbacksPacific Coast League126+26%111+11%
Truist FieldCharlotte Knights · Chicago White SoxTriple-A · International LeagueChicago White SoxInternational League122+22%155+55%
Southwest University ParkEl Paso Chihuahuas · San Diego PadresTriple-A · Pacific Coast LeagueSan Diego PadresPacific Coast League116+16%122+22%
CHS FieldSt. Paul Saints · Minnesota TwinsTriple-A · International LeagueMinnesota TwinsInternational League114+14%132+32%
Principal ParkIowa Cubs · Chicago CubsTriple-A · International LeagueChicago CubsInternational League113+13%117+17%
The Ballpark at America First SquareSalt Lake Bees · Los Angeles AngelsTriple-A · Pacific Coast LeagueLos Angeles AngelsPacific Coast League113+13%113+13%
NBT Bank StadiumSyracuse Mets · New York MetsTriple-A · International LeagueNew York MetsInternational League111+11%127+27%
Polar ParkWorcester Red Sox · Boston Red SoxTriple-A · International LeagueBoston Red SoxInternational League111+11%99−1%
Isotopes ParkAlbuquerque Isotopes · Colorado RockiesTriple-A · Pacific Coast LeagueColorado RockiesPacific Coast League109+9%95−5%
Louisville Slugger FieldLouisville Bats · Cincinnati RedsTriple-A · International LeagueCincinnati RedsInternational League108+8%114+14%
Werner ParkOmaha Storm Chasers · Kansas City RoyalsTriple-A · International LeagueKansas City RoyalsInternational League105+5%103+3%
AutoZone ParkMemphis Redbirds · St. Louis CardinalsTriple-A · International LeagueSt. Louis CardinalsInternational League102+2%117+17%
PNC FieldScranton/Wilkes-Barre RailRiders · New York YankeesTriple-A · International LeagueNew York YankeesInternational League101+1%97−3%
Huntington ParkColumbus Clippers · Cleveland GuardiansTriple-A · International LeagueCleveland GuardiansInternational League100average114+14%
ESL BallparkRochester Red Wings · Washington NationalsTriple-A · International LeagueWashington NationalsInternational League98−2%102+2%
Durham Bulls Athletic ParkDurham Bulls · Tampa Bay RaysTriple-A · International LeagueTampa Bay RaysInternational League97−3%115+15%
Coca-Cola ParkLehigh Valley IronPigs · Philadelphia PhilliesTriple-A · International LeaguePhiladelphia PhilliesInternational League94−6%97−3%
Vystar BallparkJacksonville Jumbo Shrimp · Miami MarlinsTriple-A · International LeagueMiami MarlinsInternational League92−8%94−6%
First Horizon ParkNashville Sounds · Milwaukee BrewersTriple-A · International LeagueMilwaukee BrewersInternational League91−9%65−35%
Gwinnett FieldGwinnett Stripers · Atlanta BravesTriple-A · International LeagueAtlanta BravesInternational League91−9%77−23%
Harbor ParkNorfolk Tides · Baltimore OriolesTriple-A · International LeagueBaltimore OriolesInternational League91−9%73−27%
Sahlen FieldBuffalo Bisons · Toronto Blue JaysTriple-A · International LeagueToronto Blue JaysInternational League89−11%78−22%
Cheney StadiumTacoma Rainiers · Seattle MarinersTriple-A · Pacific Coast LeagueSeattle MarinersPacific Coast League86−14%110+10%
Chickasaw Bricktown BallparkOklahoma City Comets · Los Angeles DodgersTriple-A · Pacific Coast LeagueLos Angeles DodgersPacific Coast League86−14%76−24%
Sutter Health ParkSacramento River Cats · San Francisco GiantsTriple-A · Pacific Coast LeagueSan Francisco GiantsPacific Coast League86−14%91−9%
Victory FieldIndianapolis Indians · Pittsburgh PiratesTriple-A · International LeaguePittsburgh PiratesInternational League86−14%67−33%
Fifth Third FieldToledo Mud Hens · Detroit TigersTriple-A · International LeagueDetroit TigersInternational League83−17%67−33%
Dell DiamondRound Rock Express · Texas RangersTriple-A · Pacific Coast LeagueTexas RangersPacific Coast League82−18%75−25%
Constellation FieldSugar Land Space Cowboys · Houston AstrosTriple-A · Pacific Coast LeagueHouston AstrosPacific Coast League77−23%76−24%
Double-A park factors (30 parks)
HodgetownAmarillo Sod Poodles · Arizona DiamondbacksDouble-A · Texas LeagueArizona DiamondbacksTexas League148+48%207+107%
FirstEnergy StadiumReading Fightin Phils · Philadelphia PhilliesDouble-A · Eastern LeaguePhiladelphia PhilliesEastern League116+16%155+55%
Keesler Federal ParkBiloxi Shuckers · Milwaukee BrewersDouble-A · Southern LeagueMilwaukee BrewersSouthern League114+14%120+20%
Dunkin' ParkHartford Yard Goats · Colorado RockiesDouble-A · Eastern LeagueColorado RockiesEastern League111+11%105+5%
Riders FieldFrisco RoughRiders · Texas RangersDouble-A · Texas LeagueTexas RangersTexas League108+8%112+12%
Erlanger ParkChattanooga Lookouts · Cincinnati RedsDouble-A · Southern LeagueCincinnati RedsSouthern League107+7%152+52%
Delta Dental ParkPortland Sea Dogs · Boston Red SoxDouble-A · Eastern LeagueBoston Red SoxEastern League106+6%84−16%
Route 66 StadiumSpringfield Cardinals · St. Louis CardinalsDouble-A · Texas LeagueSt. Louis CardinalsTexas League106+6%123+23%
Delta Dental StadiumNew Hampshire Fisher Cats · Toronto Blue JaysDouble-A · Eastern LeagueToronto Blue JaysEastern League104+4%94−6%
Equity Bank ParkWichita Wind Surge · Minnesota TwinsDouble-A · Texas LeagueMinnesota TwinsTexas League104+4%100average
ONEOK FieldTulsa Drillers · Los Angeles DodgersDouble-A · Texas LeagueLos Angeles DodgersTexas League104+4%131+31%
Peoples Natural Gas FieldAltoona Curve · Pittsburgh PiratesDouble-A · Eastern LeaguePittsburgh PiratesEastern League104+4%82−18%
Momentum Bank BallparkMidland RockHounds · AthleticsDouble-A · Texas LeagueAthleticsTexas League103+3%64−36%
Prince George's StadiumChesapeake Baysox · Baltimore OriolesDouble-A · Eastern LeagueBaltimore OriolesEastern League100average138+38%
Synovus ParkColumbus Clingstones · Atlanta BravesDouble-A · Southern LeagueAtlanta BravesSouthern League99−1%132+32%
UPMC ParkErie SeaWolves · Detroit TigersDouble-A · Eastern LeagueDetroit TigersEastern League99−1%97−3%
Blue Wahoos StadiumPensacola Blue Wahoos · Miami MarlinsDouble-A · Southern LeagueMiami MarlinsSouthern League98−2%95−5%
FNB FieldHarrisburg Senators · Washington NationalsDouble-A · Eastern LeagueWashington NationalsEastern League98−2%100average
Whataburger FieldCorpus Christi Hooks · Houston AstrosDouble-A · Texas LeagueHouston AstrosTexas League98−2%107+7%
CarMax ParkRichmond Flying Squirrels · San Francisco GiantsDouble-A · Eastern LeagueSan Francisco GiantsEastern League97−3%114+14%
DABOS ParkMontgomery Biscuits · Tampa Bay RaysDouble-A · Southern LeagueTampa Bay RaysSouthern League97−3%76−24%
Arvest BallparkNorthwest Arkansas Naturals · Kansas City RoyalsDouble-A · Texas LeagueKansas City RoyalsTexas League95−5%93−7%
Covenant Health ParkKnoxville Smokies · Chicago CubsDouble-A · Southern LeagueChicago CubsSouthern League94−6%74−26%
Regions FieldBirmingham Barons · Chicago White SoxDouble-A · Southern LeagueChicago White SoxSouthern League93−7%76−24%
Toyota FieldRocket City Trash Pandas · Los Angeles AngelsDouble-A · Southern LeagueLos Angeles AngelsSouthern League92−8%112+12%
TD Bank BallparkSomerset Patriots · New York YankeesDouble-A · Eastern LeagueNew York YankeesEastern League90−10%99−1%
7 17 Credit Union ParkAkron RubberDucks · Cleveland GuardiansDouble-A · Eastern LeagueCleveland GuardiansEastern League89−11%66−34%
Mirabito StadiumBinghamton Rumble Ponies · New York MetsDouble-A · Eastern LeagueNew York MetsEastern League87−13%82−18%
Nelson Wolff StadiumSan Antonio Missions · San Diego PadresDouble-A · Texas LeagueSan Diego PadresTexas League74−26%47−53%
Dickey-Stephens ParkArkansas Travelers · Seattle MarinersDouble-A · Texas LeagueSeattle MarinersTexas League71−29%54−46%
High-A park factors (30 parks)
HomeTrust ParkAsheville Tourists · Houston AstrosHigh-A · South Atlantic LeagueHouston AstrosSouth Atlantic League137+37%153+53%
Jackson FieldLansing Lugnuts · AthleticsHigh-A · Midwest LeagueAthleticsMidwest League120+20%112+12%
Avista StadiumSpokane Indians · Colorado RockiesHigh-A · Northwest LeagueColorado RockiesNorthwest League119+19%137+37%
Nymeo FieldFrederick Keys · Baltimore OriolesHigh-A · South Atlantic LeagueBaltimore OriolesSouth Atlantic League115+15%169+69%
First National Bank FieldGreensboro Grasshoppers · Pittsburgh PiratesHigh-A · South Atlantic LeaguePittsburgh PiratesSouth Atlantic League113+13%163+63%
Everett Memorial StadiumEverett AquaSox · Seattle MarinersHigh-A · Northwest LeagueSeattle MarinersNorthwest League111+11%125+25%
Fluor Field at the West EndGreenville Drive · Boston Red SoxHigh-A · South Atlantic LeagueBoston Red SoxSouth Atlantic League111+11%104+4%
Neuroscience Group FieldWisconsin Timber Rattlers · Milwaukee BrewersHigh-A · Midwest LeagueMilwaukee BrewersMidwest League110+10%108+8%
Day Air BallparkDayton Dragons · Cincinnati RedsHigh-A · Midwest LeagueCincinnati RedsMidwest League109+9%117+17%
Veterans Memorial StadiumCedar Rapids Kernels · Minnesota TwinsHigh-A · Midwest LeagueMinnesota TwinsMidwest League104+4%100average
Dozer ParkPeoria Chiefs · St. Louis CardinalsHigh-A · Midwest LeagueSt. Louis CardinalsMidwest League103+3%112+12%
Gesa StadiumTri-City Dust Devils · Los Angeles AngelsHigh-A · Northwest LeagueLos Angeles AngelsNorthwest League101+1%89−11%
Parkview FieldFort Wayne TinCaps · San Diego PadresHigh-A · Midwest LeagueSan Diego PadresMidwest League101+1%97−3%
Modern Woodmen ParkQuad Cities River Bandits · Kansas City RoyalsHigh-A · Midwest LeagueKansas City RoyalsMidwest League97−3%88−12%
ShoreTown BallparkJersey Shore BlueClaws · Philadelphia PhilliesHigh-A · South Atlantic LeaguePhiladelphia PhilliesSouth Atlantic League96−4%80−20%
Classic Auto Group ParkLake County Captains · Cleveland GuardiansHigh-A · Midwest LeagueCleveland GuardiansMidwest League95−5%108+8%
Dow DiamondGreat Lakes Loons · Los Angeles DodgersHigh-A · Midwest LeagueLos Angeles DodgersMidwest League95−5%88−12%
Heritage Financial ParkHudson Valley Renegades · New York YankeesHigh-A · South Atlantic LeagueNew York YankeesSouth Atlantic League94−6%89−11%
Truist StadiumWinston-Salem Dash · Chicago White SoxHigh-A · South Atlantic LeagueChicago White SoxSouth Atlantic League94−6%88−12%
Maimonides ParkBrooklyn Cyclones · New York MetsHigh-A · South Atlantic LeagueNew York MetsSouth Atlantic League93−7%88−12%
ABC Supply StadiumBeloit Sky Carp · Miami MarlinsHigh-A · Midwest LeagueMiami MarlinsMidwest League92−8%95−5%
Bowling Green BallparkBowling Green Hot Rods · Tampa Bay RaysHigh-A · South Atlantic LeagueTampa Bay RaysSouth Atlantic League92−8%98−2%
PK ParkEugene Emeralds · San Francisco GiantsHigh-A · Northwest LeagueSan Francisco GiantsNorthwest League91−9%115+15%
Frawley StadiumWilmington Blue Rocks · Washington NationalsHigh-A · South Atlantic LeagueWashington NationalsSouth Atlantic League90−10%61−39%
Fifth Third ParkHub City Spartanburgers · Texas RangersHigh-A · South Atlantic LeagueTexas RangersSouth Atlantic League89−11%80−20%
Four Winds FieldSouth Bend Cubs · Chicago CubsHigh-A · Midwest LeagueChicago CubsMidwest League89−11%90−10%
LMCU BallparkWest Michigan Whitecaps · Detroit TigersHigh-A · Midwest LeagueDetroit TigersMidwest League88−12%85−15%
Rogers Field at Nat Bailey StadiumVancouver Canadians · Toronto Blue JaysHigh-A · Northwest LeagueToronto Blue JaysNorthwest League87−13%67−33%
Hops BallparkHillsboro Hops · Arizona DiamondbacksHigh-A · Northwest LeagueArizona DiamondbacksNorthwest League85−15%67−33%
AdventHealth StadiumRome Emperors · Atlanta BravesHigh-A · South Atlantic LeagueAtlanta BravesSouth Atlantic League81−19%51−49%
Single-A park factors (29 parks)
ONT FieldOntario Tower Buzzers · Los Angeles DodgersSingle-A · California LeagueLos Angeles DodgersCalifornia League118+18%144+44%
George M. Steinbrenner FieldTampa Tarpons · New York YankeesSingle-A · Florida State LeagueNew York YankeesFlorida State League115+15%145+45%
Carilion Clinic FieldSalem RidgeYaks · Boston Red SoxSingle-A · Carolina LeagueBoston Red SoxCarolina League113+13%82−18%
Jackie Robinson BallparkDaytona Tortugas · Cincinnati RedsSingle-A · Florida State LeagueCincinnati RedsFlorida State League112+12%104+4%
SRP ParkAugusta GreenJackets · Atlanta BravesSingle-A · Carolina LeagueAtlanta BravesCarolina League108+8%151+51%
Morongo FieldRancho Cucamonga Quakes · Los Angeles AngelsSingle-A · California LeagueLos Angeles AngelsCalifornia League107+7%115+15%
TD BallparkDunedin Blue Jays · Toronto Blue JaysSingle-A · Florida State LeagueToronto Blue JaysFlorida State League107+7%119+19%
The DiamondLake Elsinore Storm · San Diego PadresSingle-A · California LeagueSan Diego PadresCalifornia League107+7%84−16%
Excite BallparkSan Jose Giants · San Francisco GiantsSingle-A · California LeagueSan Francisco GiantsCalifornia League106+6%93−7%
L.P. Frans StadiumHickory Crawdads · Texas RangersSingle-A · Carolina LeagueTexas RangersCarolina League106+6%125+25%
LECOM ParkBradenton Marauders · Pittsburgh PiratesSingle-A · Florida State LeaguePittsburgh PiratesFlorida State League106+6%105+5%
Virginia Credit Union StadiumFredericksburg Nationals · Washington NationalsSingle-A · Carolina LeagueWashington NationalsCarolina League106+6%103+3%
Wilson BallparkWilson Warbirds · Milwaukee BrewersSingle-A · Carolina LeagueMilwaukee BrewersCarolina League104+4%121+21%
Pelicans BallparkMyrtle Beach Pelicans · Chicago CubsSingle-A · Carolina LeagueChicago CubsCarolina League102+2%104+4%
Segra ParkColumbia Fireflies · Kansas City RoyalsSingle-A · Carolina LeagueKansas City RoyalsCarolina League101+1%94−6%
Clover ParkSt. Lucie Mets · New York MetsSingle-A · Florida State LeagueNew York MetsFlorida State League99−1%88−12%
SEGRA StadiumFayetteville Woodpeckers · Houston AstrosSingle-A · Carolina LeagueHouston AstrosCarolina League98−2%131+31%
San Manuel StadiumInland Empire 66ers · Seattle MarinersSingle-A · California LeagueSeattle MarinersCalifornia League97−3%78−22%
BayCare BallparkClearwater Threshers · Philadelphia PhilliesSingle-A · Florida State LeaguePhiladelphia PhilliesFlorida State League96−4%97−3%
Chukchansi ParkFresno Grizzlies · Colorado RockiesSingle-A · California LeagueColorado RockiesCalifornia League96−4%103+3%
Banner Island BallparkStockton Ports · AthleticsSingle-A · California LeagueAthleticsCalifornia League95−5%118+18%
Publix Field at Joker Marchant StadiumLakeland Flying Tigers · Detroit TigersSingle-A · Florida State LeagueDetroit TigersFlorida State League95−5%80−20%
Atrium Health BallparkKannapolis Cannon Ballers · Chicago White SoxSingle-A · Carolina LeagueChicago White SoxCarolina League94−6%76−24%
City StadiumHill City Howlers · Cleveland GuardiansSingle-A · Carolina LeagueCleveland GuardiansCarolina League94−6%89−11%
Roger Dean Chevrolet StadiumJupiter Hammerheads / Palm Beach Cardinals · Miami Marlins / St. Louis CardinalsSingle-A · Florida State LeagueMiami Marlins / St. Louis CardinalsFlorida State League93−7%106+6%
Arthur W. Perdue StadiumDelmarva Shorebirds · Baltimore OriolesSingle-A · Carolina LeagueBaltimore OriolesCarolina League90−10%72−28%
Joseph P. Riley, Jr. BallparkCharleston RiverDogs · Tampa Bay RaysSingle-A · Carolina LeagueTampa Bay RaysCarolina League90−10%69−31%
Lee Health Sports ComplexFort Myers Mighty Mussels · Minnesota TwinsSingle-A · Florida State LeagueMinnesota TwinsFlorida State League87−13%74−26%
Valley Strong BallparkVisalia Rawhide · Arizona DiamondbacksSingle-A · California LeagueArizona DiamondbacksCalifornia League87−13%106+6%

— means fewer than 20 home games, too few to measure. The dashed line in each trend is 100.

Download (CSV): 3-year (2024–2026) · 2026 · 2025 · 2024

What is a park factor?

A park factor compares the runs scored in a team's home games with the runs scored in its road games. The same clubs play in both, so the difference is mostly the ballpark: its fences, its altitude, its weather and how far the ball carries there.

How do I read 100?

100 is an average park. A runs factor of 110 means about 10% more runs are scored there than in the same clubs' road games, which stand in for an average park; 90 means about 10% fewer. The home-run factor works the same way and moves much more than runs do: a park can be 100 for runs and 125 for home runs.

How are these park factors calculated?

For each park we divide runs per game in the home club's home games by runs per game in that club's road games. Home runs work the same way. A single season uses that season's games only. The 3-year number pools the last three seasons, counting the newest three times, the one before twice and the oldest once, by games played. A park needs at least 20 home games to get a number. Every regular-season game comes from MLB's official schedule and box scores.

For our own player numbers we pull the 3-year figure halfway back toward 100, because one park's history is still a small sample. The table shows the figure before that pull. A park with fewer than three seasons of history uses the seasons it has.

Our single-season numbers closely match the standard published single-season park factors.

How should I use a park factor?

Check where a player played half his games before you judge his line. A rough rule: a season line is helped or hurt by about half the park's distance from 100, because half his games are on the road. In a 120 home-run park a hitter's home run total is inflated by about 10%, and a pitcher's home runs allowed look about 10% worse than his pitching was. When a player is promoted or traded, compare his old park with his new one before reading a change in his numbers as a change in him.

What park factors can't tell you

How to cite this

Nine Signal, “MiLB park factors, 2026”, Prospect Digest research, updated 29 Oct 2026. https://prospect-digest.com/park-factors

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