The following is a list of presently-operating bus transit systems in the United States with regular service. The list excludes charter buses, private bus operators, paratransit systems, and trolleybus systems. Figures for daily ridership, number of vehicles, and daily vehicle revenue miles are accurate as of 2009 and come from the FTA National Transit Database.
Alabama SystemLocaleMajor city(s)Daily ridership (2024)Number of vehicles (2024)Daily vehicle revenue miles (2024)ReferencesAreawide Community Transportation SystemCalhoun CountyAnniston and Oxford 228 4 501 Gadsden Trolley SystemEtowah CountyGadsden 198 4 316 MAX TransitGreater BirminghamBirmingham 5,179 42 4,790 Montgomery Area Transit SystemMontgomery CountyMontgomery 1,302 19 3,370 OrbitHuntsvilleHuntsville 1,796 17 1,993 Phenix City ExpressLee and Russell countiesPhenix City 66 4 185 The Tuscaloosa TrolleyTuscaloosa CountyTuscaloosa 774 7 827 The Wave Transit SystemMobile CountyMobile 1,527 20 3,024
Alaska SystemLocaleMajor city(s)Daily ridershipNumber of vehiclesDaily vehicle revenue milesReferencesBethel Public Transit SystemBethel Census AreaBethelCapital Transit SystemJuneauJuneau4,15418Glacier Valley TransitAnchorageGirdwoodMetropolitan Area Commuter SystemFairbanks North Star BoroughFairbanks98081,158North Slope Borough TransitNorth SlopeUtqiaġvikPeople MoverAnchorageAnchorage52The BusKetchikan Gateway BoroughKetchikan58411 The RideCity & Borough of SitkaSitkaValley TransitMat-Su BoroughWasilla>130
Arizona SystemLocaleMajor city(s)Daily ridershipNumber of vehiclesDaily vehicle revenue milesReferencesMountain LineFlagstaff areaFlagstaff7,700121,867Central Arizona Regional TransitPinal CountyCoolidge, Florence, Casa Grande134714Valley Metro (Scottsdale Trolley)ScottsdaleScottsdale111,132Vista TransitSierra VistaSierra VistaSun TranTucsonTucson17021,115Valley Metro (City of Phoenix)Maricopa CountyPhoenix42855,534Valley Metro (RPTA)Maricopa CountyTempe, Mesa30136,608Yuma County Area TransitYuma CountyYuma90882,534
Arkansas SystemLocaleMajor city(s)Daily ridershipNumber of vehiclesDaily vehicle revenue milesReferencesEureka Springs TransitCarroll CountyEureka SpringsFort Smith TransitSebastian CountyFort Smith5406747Hot Springs Intracity TransitGarland CountyHot SpringsJonesboro Economical TransitCraighead CountyJonesboroMemphis Area Transit AuthorityShelby County, Tennessee and West Memphis, ArkansasMemphisOzark Regional TransitBenton County and Washington CountyFayetteville, Springdale, Rogers, and Bentonville488111,036Pine Bluff TransitJefferson CountyPine BluffRazorback TransitUniversity of ArkansasFayetteville3,63714770Rock Region MetroLittle Rock, North Little Rock, Cammack Village, Maumelle, and SherwoodLittle Rock8,300476,348T-LineTexarkana metropolitan areaTexarkana, Texas and Texarkana, Arkansas
California SystemLocaleMajor city(s)Daily ridershipNumber of vehiclesDaily vehicle revenue milesReferencesAC TransitWestern Alameda and Contra Costa countiesOakland, Fremont, and Berkeley53260,418Anaheim Resort TransitGreater Anaheim Resort and Orange CountyAnaheim421,826Antelope Valley Transit AuthorityAntelope ValleyPalmdale and Lancaster577,046B-LineButte CountyChico3,521252,886Beach Cities TransitCoastal Los Angeles CountyRedondo Beach 101,028Bear TransitBerkeley and University of California, BerkeleyBerkeleyBig Blue BusSanta Monica and neighboring citiesSanta Monica15514,565Turlock TransitTurlockTurlock3005487Caltrain shuttle busesSan Francisco Peninsula and Santa Clara Valley4,286372,824Chula Vista TransitChula VistaChula Vista9,867333,402City of Commerce TransitCommerceCommerce1,8466665City of Lompoc TransitLompocLompoc751101,084Corona CruiserCoronaCorona4535594County ConnectionCentral Contra Costa CountyConcord868,520Culver CityBusCulver CityCulver City353,975El Dorado TransitPollock Pines, Camino, Placerville, El Dorado, Diamond Springs, El Dorado Hills, Sacramento, Shingle Springs, Folsom, Cameron ParkEl Dorado, California24,1341327,194 Fairfield and Suisun TransitFairfield and Suisun City areaFairfield and Suisun City 374,603Foothill TransitSan Gabriel Valley25631,461Fresno Area ExpressFresnoFresno9512,850Fresno County Rural Transit AgencyFresno CountyFresno7281192,150GTransGardenaGardena414,481Gold Coast TransitCities of Ventura, Oxnard, Port Hueneme, Ojai, and parts of unincorporated Ventura CountyVentura and Oxnard 394,748Golden Empire TransitBakersfield metropolitan areaBakersfield699,793Golden Gate TransitSan Francisco Bay Area (San Francisco, Marin, Sonoma, and Contra Costa counties)17214,930GrapeLineLodiLodi6638720Imperial Valley TransitImperial CountyEl Centro, Calexico, and Brawley1,524141,781Kings Area Regional TransitKings CountyHanford and Lemoore2,496162,073Laguna Beach TransitLaguna BeachLaguna Beach1,48917462Long Beach TransitLong BeachLong Beach18419,264Los Angeles County Metropolitan Transportation Authority (Metro Bus)Los Angeles CountyLos Angeles2,410257,398Los Angeles Department of TransportationLos AngelesLos Angeles83,40625821,639MargueriteStanford University (and connections to Palo Alto)Stanford6,300Marin TransitMarin CountySan Rafael, Marin City, Novato and San Anselmo66Merced County Transit (The Bus)Merced CountyMerced3,258264,018Montebello Bus LinesMontebelloMontebello20,800617,318Monterey-Salinas TransitMonterey CountyMonterey and Salinas 729,755MuniSan FranciscoSan Francisco82034,171North County Transit District (Breeze)North San Diego County 12115,742Norwalk TransitNorwalk areaNorwalk 283,758OmnitransSan Bernardino valleySan Bernardino 13922,679Orange County Transportation AuthorityOrange County 54364,645Petaluma TransitPetalumaPetaluma4206527Placer County TransitPlacer CountyAuburn2,483223,417Porterville TransitPortervillePorterville1,522131,003Redding Area Bus AuthorityShasta CountyRedding 121,892Riverside Transit AgencyWestern Riverside CountyRiverside, Moreno Valley, and Corona 13321,299Roseville TransitRoseville areaRoseville1,103161,748Sacramento Regional Transit District (RT)Sacramento regionSacramento 19519,847SamTransSan Mateo County 26420,022San Diego Metropolitan Transit System (MTS)San Diego CountySan Diego 42049,403San Joaquin Regional Transit District (RTD)San Joaquin CountyStockton929,504San Luis Obispo Regional Transit AuthoritySan Luis Obispo CountySan Luis Obispo1,514162,537Santa Barbara Metropolitan Transit District (MTD)Santa Barbara, Carpinteria, Goleta, Montecito, Summerland, and Isla VistaSanta Barbara927,763Santa Clara Valley Transportation Authority (VTA)Santa Clara CountySan Jose34743,794Santa Clarita TransitSanta ClaritaSanta Clarita, California688,250Santa Cruz MetroSanta Cruz CountySanta Cruz and Watsonville829,066Santa Maria Area TransitSanta MariaSanta Maria3,189152,157Santa Rosa CityBusSanta RosaSanta Rosa7,831352,990Simi Valley TransitSimi ValleySimi Valley80081,304SLO TransitSan Luis ObispoSan Luis Obispo2,828121,038SolTransSolano CountyVallejo, Benicia375,282Sonoma County TransitSonoma CountySanta Rosa3,844414,727Stanislaus Regional Transit AuthorityStanislaus CountyModestoSunLineCoachella Valley436,463Thousand Oaks TransitThousand OaksThousand Oaks5096534Torrance TransitSouth Bay region of Los Angeles County565,617Tri Delta TransitEastern Contra Costa County6,000576,639Tulare County Regional Transit AgencyTulare CountyTulare, Dinuba25+Union City TransitUnion CityUnion City1,270121,251UnitransDavis and the University of California, DavisDavis18,800351,969Ventura Intercity Service Transit AuthorityVentura County253,848Victor Valley Transit AuthorityVictor ValleyVictorville, Hesperia, and Apple Valley3,401264,569VINENapa CountyNapa3,300252,841Visalia TransitVisaliaVisalia283,789WestCATWestern Contra Costa CountyPinole and Hercules3,772354,256WHEELSTri-ValleyDublin, Livermore and Pleasanton 475,527YolobusYolo County and parts of SacramentoDavis, West Sacramento, and Woodland416,029Yuba-Sutter TransitSutter CountyYuba City2,699232,385
Colorado SystemLocaleMajor city(s)Daily ridershipNumber of vehiclesDaily vehicle revenue milesReferencesAvon TransitAvonAvon3343423BustangStatewideStatewide766805,454City of Loveland TransitLovelandLoveland3995428Durango TransitLa Plata CountyDurango1,16518175Grand Valley TransitGrand Junction, Palisade, Clifton, Orchard Mesa, and FruitaGrand Junction2,354112,027Greeley-Evans TransitGreeley and EvansGreeley2,210331,065Mountain Metropolitan TransitColorado SpringsColorado Springs12,1001438,681Pueblo TransitPuebloPueblo2,479121,532Regional Transportation DistrictDenver metropolitan areaDenver955104,782Roaring Fork Transportation AuthorityRoaring Fork ValleyAspen, Carbondale, and Glenwood Springs11,800Summit StageSummit County, Fairplay, LeadvilleBreckenridge, Frisco, Copper, Dillon, Silverthorne, Keystone, Blue River, Alma, Fairplay, Leadville8,0002010,000TransfortFort Collins areaFort Collins232,169
Connecticut SystemLocaleMajor city(s)Daily ridershipNumber of vehiclesDaily vehicle revenue milesReferences9 Town TransitOld SaybrookConnecticut Transit (Hartford Division)Hartford areaHartford37,20119317,937Connecticut Transit (New Haven Division)New Haven metropolitan areaNew Haven23,557929,478Connecticut Transit (Stamford Division)Stamford metropolitan areaStamford9,155434,213Greater Bridgeport Transit AuthorityBridgeport metropolitan areaBridgeport16,819Housatonic Area Regional TransitDanbury areaDanbury3,378Middletown Area TransitMiddletown areaMiddletown1,725Milford Transit DistrictMilfordMilford1,379Northeast Transportation CompanyWaterbury, Meriden, and WallingfordWaterbury6,782Norwalk Transit DistrictNorwalk metropolitan areaNorwalk5,000Southeast Area TransitNew London and Norwich3,789Windham Region Transit DistrictWindham CountyMagic Carpet BusEnfield AreaEnfieldNortheastern Connecticut Transit District Northeastern Connecticut (Brooklyn, Canterbury, Killingly, Putnam, Thompson, Eastford, Plainfield, Pomfret, Woodstock, and Union)Valley Transit District Ansonia, Derby, Seymour, and Shelton
Delaware SystemLocaleMajor city(s)Daily ridershipNumber of vehiclesDaily vehicle revenue milesReferencesDART First StateDelaware (statewide)Dover, Newark, Wilmington18317,023Unicity Bus SystemNewark and University of DelawareNewark
District of Columbia SystemLocaleMajor city(s)Daily ridershipNumber of vehiclesDaily vehicle revenue milesReferencesMetrobusWashington Metropolitan AreaWashington 1,310375,052
Florida