RANKING · 2010 CENSUS · 500 SHOWN OF 2,716

Largest Czech population, US counties · 2010

US counties ranked by the number of residents who are Czech ancestry, from the 2023 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. Cook County, Illinois leads at 49,240. 2,716 counties qualify in total. Texas carries 7 of the top 25 entries.

All statesAll rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPCZECH POPULATIONVS 2000

01Cook County, ILIL5,194,62549,240–

02Harris County, TXTX5,045,02628,410–

03DuPage County, ILIL934,29823,192–

04Cuyahoga County, OHOH1,232,92522,526–

05Douglas County, NENE606,46021,284–

06Maricopa County, AZAZ4,689,55818,930–

07Lancaster County, NENE334,04918,197–

08Los Angeles County, CACA9,694,93417,272–

09Hennepin County, MNMN1,284,78417,206–

10Linn County, IAIA232,02814,644–

11Will County, ILIL712,25312,754–

12San Diego County, CACA3,282,24811,932–

13King County, WAWA2,344,93910,553–

14Tarrant County, TXTX2,248,46610,322–

15Travis County, TXTX1,389,67010,299–

16Williamson County, TXTX752,8279,593–

17Orange County, CACA3,149,5079,252–

18Milwaukee County, WIWI924,2169,164–

19Dallas County, TXTX2,661,3979,039–

20Allegheny County, PAPA1,225,0358,967–

21Fort Bend County, TXTX975,1918,895–

22Bexar County, TXTX2,160,0888,744–

23Suffolk County, NYNY1,546,0908,389–

24Ramsey County, MNMN541,6238,083–

25St. Louis County, MOMO990,9117,788–

26Manitowoc County, WIWI81,7107,587–

27Dakota County, MNMN457,7107,565–

28Sarpy County, NENE208,3037,402–

29Clark County, NVNV2,407,2267,218–

30Dane County, WIWI590,3757,077–

31Lake County, ILIL719,3396,898–

32Oakland County, MIMI1,288,3376,397–

33Brown County, WIWI275,8036,327–

34Wharton County, TXTX42,0606,166–

35Kane County, ILIL525,7576,114–

36Lavaca County, TXTX20,6515,952–

37Waukesha County, WIWI417,2105,933–

38Summit County, OHOH538,3765,928–

39McLennan County, TXTX272,0205,846–

40Anoka County, MNMN381,6055,678–

41Brazoria County, TXTX419,0805,665–

42McHenry County, ILIL317,7515,622–

43Baltimore County, MDMD847,6505,606–

44Johnson County, IAIA160,0445,405–

45Scott County, MNMN159,0175,304–

46Collin County, TXTX1,297,1795,291–

47Palm Beach County, FLFL1,575,7265,216–

48Victoria County, TXTX92,6565,215–

49Franklin County, OHOH1,361,5365,115–

50Fairfax County, VAVA1,167,8735,033–

51Riverside County, CACA2,544,9165,028–

52Wayne County, MIMI1,769,0385,025–

53Saunders County, NENE23,7024,990–

54Pima County, AZAZ1,074,6854,908–

55Johnson County, KSKS636,9064,864–

56Pinellas County, FLFL948,5634,831–

57Nassau County, NYNY1,398,9394,825–

58New York County, NYNY1,664,8624,820–

59Broward County, FLFL2,013,3174,796–

60Santa Clara County, CACA1,914,3914,729–

61Polk County, IAIA516,5464,663–

62El Paso County, COCO757,0404,640–

63Jefferson County, COCO580,4514,637–

64Brazos County, TXTX249,0884,599–

65Montgomery County, TXTX781,1944,564–

66Denton County, TXTX1,069,3464,505–

67Multnomah County, OROR795,3914,412–

68Fayette County, TXTX25,4594,201–

69Bell County, TXTX402,2484,185–

70Hillsborough County, FLFL1,574,1154,021–

71Arapahoe County, COCO673,8204,000–

72Sacramento County, CACA1,618,4603,992–

73Racine County, WIWI198,9193,989–

74Washington County, MNMN286,8953,909–

75Morris County, NJNJ524,2513,750–

76Macomb County, MIMI886,2213,697–

77Galveston County, TXTX372,2073,633–

78Bergen County, NJNJ977,0263,628–

79Westchester County, NYNY1,015,7433,626–

80Middlesex County, MAMA1,669,9793,616–

81Denver County, COCO740,6133,609–

82Westmoreland County, PAPA349,3243,594–

83Wake County, NCNC1,257,2353,594–

84Rice County, MNMN69,9393,563–

85Sedgwick County, KSKS538,4333,528–

86Queens County, NYNY2,358,1823,450–

87Ellis County, TXTX240,8673,424–

88San Bernardino County, CACA2,224,0913,408–

89Larimer County, COCO377,2923,395–

90Kings County, NYNY2,653,9633,393–

91Le Sueur County, MNMN29,4533,385–

92Contra Costa County, CACA1,170,0703,368–

93Ocean County, NJNJ673,7463,362–

94Medina County, OHOH185,0253,358–

95Pierce County, WAWA946,2883,345–

96Montgomery County, PAPA877,6433,333–

97Montgomery County, MDMD1,074,5823,330–

98Oklahoma County, OKOK822,1253,267–

99Dodge County, NENE38,0573,172–

100Boulder County, COCO328,5603,142–

101Snohomish County, WAWA870,6563,035–

102Salt Lake County, UTUT1,220,9163,033–

103Austin County, TXTX33,6253,013–

104Minnehaha County, SDSD212,6912,988–

105San Francisco County, CACA826,0792,987–

106Alameda County, CACA1,636,6302,954–

107Lake County, OHOH232,2172,952–

108Butler County, NENE8,5072,914–

109Lee County, FLFL875,6072,836–

110Spokane County, WAWA558,3442,816–

111Anne Arundel County, MDMD603,3802,791–

112Ventura County, CACA830,8512,761–

113Douglas County, COCO399,3962,733–

114Adams County, COCO554,6682,720–

115Jackson County, MOMO732,9942,706–

116Nueces County, TXTX352,9922,696–

117Saline County, NENE14,9962,674–

118Ada County, IDID546,1412,661–

119Wright County, MNMN157,5592,654–

120Middlesex County, NJNJ883,3352,649–

121Jefferson County, MOMO233,1322,643–

122Washington County, OROR611,7082,605–

123Kewaunee County, WIWI20,7582,581–

124Lorain County, OHOH323,2192,556–

125Monmouth County, NJNJ651,0352,534–

126Sarasota County, FLFL479,9582,510–

127Carver County, MNMN114,3792,483–

128Monroe County, NYNY750,5062,461–

129Lake County, ININ504,6122,416–

130Hall County, NENE63,6332,403–

131Brevard County, FLFL663,9822,390–

132Steele County, MNMN37,4642,388–

133La Crosse County, WIWI121,3392,385–

134Miami-Dade County, FLFL2,802,0292,383–

135Kent County, MIMI675,2322,379–

136Outagamie County, WIWI195,8942,374–

137Marathon County, WIWI139,4322,361–

138Broome County, NYNY195,7362,348–

139Black Hawk County, IAIA131,5322,325–

140Colorado County, TXTX21,4392,317–

141Genesee County, MIMI401,0932,309–

142Platte County, NENE35,6492,293–

143Shiawassee County, MIMI67,6812,280–

144Mecklenburg County, NCNC1,233,3832,279–

145Hays County, TXTX304,3902,279–

146Stearns County, MNMN164,1102,265–

147Hamilton County, OHOH838,4182,237–

148Harford County, MDMD266,4462,235–

149St. Louis County, MNMN200,5182,224–

150Pasco County, FLFL674,5162,221–

151Cass County, NDND201,7942,220–

152Orange County, FLFL1,528,0022,216–

153Philadelphia County, PAPA1,574,2812,209–

154Erie County, NYNY946,7412,207–

155Duval County, FLFL1,062,9632,175–

156Fulton County, GAGA1,098,7912,171–

157Bucks County, PAPA647,8282,165–

158Clackamas County, OROR426,2802,134–

159Buffalo County, NENE51,1722,134–

160Colfax County, NENE10,9342,131–

161San Mateo County, CACA743,5682,129–

162St. Charles County, MOMO426,4992,123–

163Olmsted County, MNMN166,7312,119–

164Kendall County, ILIL145,4702,095–

165Clark County, WAWA532,1192,094–

166Tama County, IAIA16,7962,091–

167Bernalillo County, NMNM667,6012,091–

168Washtenaw County, MIMI370,2142,086–

169Weld County, COCO378,4262,081–

170Portage County, OHOH163,4042,064–

171Matagorda County, TXTX36,4632,060–

172Winnebago County, WIWI174,2182,044–

173Seward County, NENE18,0322,034–

174Burleson County, TXTX20,5492,025–

175Chester County, PAPA557,1162,013–

176Sonoma County, CACA486,4442,011–

177Chippewa County, WIWI67,6141,993–

178Kenosha County, WIWI168,4481,987–

179Dutchess County, NYNY300,7081,985–

180Eau Claire County, WIWI109,0331,935–

181Cobb County, GAGA793,3451,888–

182Tulsa County, OKOK698,7821,866–

183Lane County, OROR381,5841,864–

184Scott County, IAIA175,2591,836–

185Yankton County, SDSD23,6351,831–

186Geauga County, OHOH95,6761,827–

187Stark County, OHOH373,7711,822–

188Washington County, PAPA210,8021,818–

189Jackson County, TXTX15,3931,815–

190Madison County, NENE36,1061,801–

191Norfolk County, MAMA739,7491,792–

192Anchorage, AKAK287,1551,771–

193Seminole County, FLFL491,8841,766–

194Benton County, IAIA26,0041,760–

195Sherburne County, MNMN104,1941,757–

196Erie County, PAPA265,8321,754–

197Pennington County, SDSD116,7921,751–

198Madison County, ILIL263,1101,724–

199Stark County, NDND34,0131,723–

200Union County, NJNJ601,8631,713–

201Barron County, WIWI46,4841,706–

202Bastrop County, TXTX118,9081,703–

203Mercer County, NJNJ399,2891,693–

204Lucas County, OHOH423,3471,689–

205Baltimore, MDMD569,9971,668–

206St. Louis, MOMO278,1441,655–

207Orange County, NYNY417,6691,641–

208Marion County, ININ992,1961,636–

209Winnebago County, ILIL283,6741,633–

210Lehigh County, PAPA384,3831,630–

211Washoe County, NVNV509,3861,628–

212Northampton County, PAPA324,4111,619–

213Fresno County, CACA1,035,4561,614–

214Cleveland County, OKOK303,9731,605–

215Washington County, WIWI139,2381,605–

216Luzerne County, PAPA332,1261,604–

217Somerset County, NJNJ356,4861,589–

218Rock County, WIWI166,4721,589–

219Saginaw County, MIMI187,6881,583–

220McLeod County, MNMN36,6311,579–

221Volusia County, FLFL606,5731,574–

222Story County, IAIA101,2911,566–

223Cass County, NENE27,6571,563–

224Virginia Beach, VAVA453,7371,563–

225Howard County, MDMD339,1831,554–

226Canadian County, OKOK187,1891,541–

227San Luis Obispo County, CACA282,3671,516–

228Shawnee County, KSKS178,6071,509–

229Collier County, FLFL417,1311,502–

230Lubbock County, TXTX328,9061,498–

231Marin County, CACA253,6941,475–

232St. Croix County, WIWI98,2761,475–

233Pottawattamie County, IAIA92,9961,474–

234York County, PAPA473,1971,467–

235Walworth County, WIWI106,1271,466–

236Bon Homme County, SDSD7,2441,459–

237Ingham County, MIMI289,7091,452–

238Grand Forks County, NDND74,5011,445–

239Essex County, MAMA826,6531,443–

240Gwinnett County, GAGA1,018,0991,442–

241Grand Traverse County, MIMI96,7291,437–

242Dauphin County, PAPA293,3511,436–

243Lancaster County, PAPA563,1591,436–

244New Castle County, DEDE588,0261,434–

245Butler County, OHOH400,1281,431–

246Sussex County, NJNJ148,0631,418–

247Delaware County, PAPA580,9371,410–

248Clay County, MOMO265,0321,409–

249Grant County, WIWI52,4461,409–

250Langlade County, WIWI19,5341,405–

251Placer County, CACA442,0811,402–

252Butler County, PAPA200,1691,400–

253Beaver County, PAPA166,0321,395–

254St. Clair County, ILIL250,7081,393–

255District of Columbia, DCDC693,6451,392–

256Passaic County, NJNJ531,6241,381–

257Chesterfield County, VAVA397,1481,369–

258Winneshiek County, IAIA19,7331,367–

259Berrien County, MIMI152,4441,367–

260Douglas County, MNMN40,1201,366–

261Polk County, FLFL874,7901,364–

262Kaufman County, TXTX209,2351,362–

263Santa Barbara County, CACA442,0651,358–

264Loudoun County, VAVA449,7491,356–

265Burlington County, NJNJ481,4391,355–

266Prince William County, VAVA502,9661,355–

267Worcester County, MAMA888,5021,353–

268Rockland County, NYNY357,3971,346–

269Kern County, CACA927,0681,345–

270Sheboygan County, WIWI118,0471,343–

271Gonzales County, TXTX20,1591,330–

272Essex County, NJNJ896,3791,323–

273Wood County, WIWI74,0601,314–

274Montgomery County, OHOH539,5981,310–

275Gage County, NENE21,7111,307–

276Mahoning County, OHOH224,7061,304–

277Manatee County, FLFL468,2001,299–

278Onondaga County, NYNY466,5841,294–

279Marion County, OROR355,7771,293–

280Albany County, NYNY321,2251,289–

281Monterey County, CACA433,7291,286–

282Jefferson County, KYKY795,2221,285–

283Kalamazoo County, MIMI263,7951,277–

284Douglas County, KSKS120,9201,275–

285Webster County, IAIA36,8381,270–

286Hill County, TXTX39,5031,270–

287Livingston County, MIMI197,3151,267–

288Santa Cruz County, CACA258,8521,255–

289Vernon County, WIWI31,4431,249–

290Davidson County, TNTN745,9041,245–

291Hernando County, FLFL221,7011,244–

292Fayette County, PAPA123,0211,240–

293Cambria County, PAPA128,9681,233–

294Hillsborough County, NHNH433,4151,231–

295Milam County, TXTX26,2581,230–

296Ozaukee County, WIWI94,3461,229–

297Crawford County, WIWI15,9101,224–

298Baldwin County, ALAL267,7611,219–

299Marion County, FLFL442,6601,208–

300Kitsap County, WAWA283,3741,206–

301Howard County, IAIA9,4151,204–

302Honolulu County, HIHI988,7031,200–

303Suffolk County, MAMA791,8911,197–

304Greene County, MOMO309,2861,195–

305Berks County, PAPA440,0721,191–

306Adams County, NENE31,0711,189–

307Lake County, FLFL456,0681,188–

308DeKalb County, ILIL101,8351,188–

309Tom Green County, TXTX120,6021,185–

310Camden County, NJNJ535,7991,179–

311Carroll County, MDMD176,6771,177–

312Knox County, NENE8,3351,168–

313Allen County, ININ402,3291,167–

314Cerro Gordo County, IAIA42,3721,162–

315Comal County, TXTX209,1661,158–

316Porter County, ININ176,0491,147–

317Yavapai County, AZAZ252,5521,142–

318Pinal County, AZAZ539,3801,136–

319Hamilton County, ININ387,0361,135–

320Utah County, UTUT759,8591,121–

321Butte County, CACA209,2111,118–

322Sauk County, WIWI66,6521,118–

323Blue Earth County, MNMN70,6341,115–

324Belmont County, OHOH64,4341,110–

325Guadalupe County, TXTX201,1111,110–

326Calhoun County, TXTX19,5991,107–

327Guilford County, NCNC562,2341,104–

328Ottawa County, MIMI308,4591,099–

329Trumbull County, OHOH198,9721,093–

330Oconto County, WIWI40,1951,089–

331Price County, WIWI13,9881,088–

332Pine County, MNMN30,4721,086–

333Peoria County, ILIL178,5531,086–

334Yellowstone County, MTMT172,6921,080–

335Woodbury County, IAIA106,6491,079–

336Leon County, FLFL299,0481,078–

337Arlington County, VAVA243,9311,076–

338Burleigh County, NDND103,2511,074–

339Garfield County, OKOK61,7791,072–

340Benton County, ARAR332,5541,068–

341Clinton County, MIMI80,4321,067–

342Shelby County, TNTN910,2261,064–

343Charles Mix County, SDSD9,3031,060–

344Thurston County, WAWA304,2611,055–

345Muskegon County, MIMI177,9011,054–

346Mohave County, AZAZ228,1021,052–

347Walsh County, NDND10,1791,051–

348Frederick County, MDMD302,8831,043–

349Pierce County, WIWI43,5191,043–

350Wood County, OHOH134,1761,037–

351McLean County, ILIL171,4191,033–

352Lincoln County, NENE33,3031,029–

353Portage County, WIWI71,9431,024–

354Hampden County, MAMA464,3381,021–

355Mercer County, PAPA107,8601,019–

356Williamson County, TNTN272,0611,018–

357Jackson County, OROR221,7951,006–

358Grayson County, TXTX153,6131,001–

359LaSalle County, ILIL107,773998–

360Hunterdon County, NJNJ131,781995–

361Washington County, NENE21,302992–

362Rock Island County, ILIL141,869991–

363Jefferson County, WIWI86,505990–

364St. Joseph County, ININ272,861989–

365Grundy County, ILIL54,052988–

366Delaware County, OHOH242,032978–

367San Joaquin County, CACA823,815974–

368Warren County, NJNJ112,953967–

369Juneau County, WIWI26,649966–

370Charleston County, SCSC436,200962–

371Whatcom County, WAWA236,392961–

372St. Johns County, FLFL346,328960–

373Fond du Lac County, WIWI104,669954–

374Marshall County, IAIA39,890953–

375Champaign County, ILIL209,972952–

376DeWitt County, TXTX20,309951–

377Jones County, IAIA21,253950–

378Johnson County, TXTX218,048950–

379Gallatin County, MTMT128,740947–

380Centre County, PAPA157,393943–

381Kootenai County, IDID191,864937–

382LaPorte County, ININ111,294931–

383Dodge County, WIWI89,097931–

384Yamhill County, OROR110,024923–

385Iowa County, IAIA16,504916–

386Mower County, MNMN40,971916–

387Boone County, MOMO191,746912–

388Elkhart County, ININ208,774911–

389Franklin County, MOMO108,090904–

390Jefferson County, TXTX254,321898–

391Marinette County, WIWI42,574897–

392Rockwall County, TXTX140,738894–

393Deschutes County, OROR213,072891–

394Crow Wing County, MNMN69,132885–

395Cumberland County, PAPA277,270883–

396Laramie County, WYWY102,938878–

397Midland County, MIMI83,754877–

398Beltrami County, MNMN47,055877–

399Saline County, KSKS53,377872–

400Renville County, MNMN14,356867–

401Liberty County, TXTX121,364867–

402Fillmore County, NENE5,458860–

403Randall County, TXTX152,351858–

404Charlotte County, FLFL217,212855–

405Eaton County, MIMI109,581853–

406Monroe County, ININ143,345852–

407Cascade County, MTMT85,029852–

408Hudson County, NJNJ735,033852–

409Jefferson County, ALAL665,742850–

410Columbia County, WIWI58,132849–

411Saratoga County, NYNY241,343848–

412Monroe County, WIWI46,572847–

413Freeborn County, MNMN30,440846–

414Goodhue County, MNMN48,195844–

415Dubuque County, IAIA99,381842–

416Clay County, MNMN67,734842–

417Payne County, OKOK83,889842–

418Holt County, NENE10,067839–

419Winona County, MNMN50,523838–

420Buncombe County, NCNC277,417836–

421Indian River County, FLFL172,799833–

422Walker County, TXTX83,842833–

423Henrico County, VAVA342,775832–

424Sangamon County, ILIL194,170830–

425Indiana County, PAPA82,878830–

426Stanton County, NENE5,744830–

427Shawano County, WIWI41,560829–

428Alachua County, FLFL290,028826–

429Gloucester County, NJNJ312,638823–

430Richland County, WIWI17,036821–

431San Patricio County, TXTX72,053816–

432Smith County, TXTX252,549816–

433Monroe County, PAPA167,179813–

434Greenville County, SCSC583,125812–

435Natrona County, WYWY80,526807–

436Otter Tail County, MNMN61,041805–

437Santa Rosa County, FLFL211,115804–

438Monroe County, MIMI156,004804–

439Polk County, MNMN30,545802–

440Ulster County, NYNY183,330801–

441Hampshire County, MAMA164,065798–

442Cherokee County, GAGA299,273796–

443Iowa County, WIWI23,951794–

444Hanover County, VAVA116,423792–

445Prince George's County, MDMD970,374786–

446Escambia County, FLFL333,834785–

447Knox County, TNTN511,453784–

448St. Lucie County, FLFL402,449783–

449Hidalgo County, TXTX921,549782–

450Martin County, FLFL166,272778–

451Cedar County, IAIA18,359778–

452Schenectady County, NYNY162,581778–

453Mesa County, COCO162,845777–

454Pueblo County, COCO169,277774–

455Lackawanna County, PAPA216,502770–

456Ashtabula County, OHOH96,713765–

457Chisago County, MNMN59,142764–

458Shasta County, CACA181,648756–

459Wilson County, TXTX56,139754–

460Parker County, TXTX184,767753–

461Wichita County, TXTX129,555753–

462Morton County, NDND34,601752–

463Door County, WIWI30,616752–

464Benton County, WAWA221,722747–

465Clay County, FLFL239,593746–

466Spotsylvania County, VAVA155,388746–

467Greene County, OHOH174,322742–

468Riley County, KSKS72,598739–

469Lincoln County, MOMO66,676736–

470Richmond County, NYNY501,290735–

471Valley County, NENE4,094732–

472Gregg County, TXTX126,095731–

473Orange County, NCNC152,498730–

474Citrus County, FLFL171,666729–

475Beaufort County, SCSC204,433723–

476Broomfield County, COCO79,174714–

477Tompkins County, NYNY104,047714–

478Lincoln County, SDSD77,145711–

479Waller County, TXTX69,858707–

480Eagle County, COCO54,291702–

481Becker County, MNMN35,497702–

482Schuylkill County, PAPA145,085701–

483Madison County, ALAL433,516698–

484Benton County, OROR97,728690–

485Kankakee County, ILIL105,525686–

486Plymouth County, MAMA546,829685–

487Missoula County, MTMT123,513680–

488Van Buren County, MIMI76,071677–

489Horry County, SCSC427,551676–

490York County, NENE14,564675–

491Polk County, TXTX53,434674–

492Warren County, OHOH257,181673–

493Scotts Bluff County, NENE35,586671–

494Oneida County, WIWI38,131670–

495Dallas County, IAIA118,457668–

496Washington County, IAIA22,667658–

497Santa Fe County, NMNM156,907658–

498Canyon County, IDID275,123656–

499Richland County, NDND16,731650–

500El Dorado County, CACA192,323649–

SHOWING 1–500 OF 2,716

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Download CSV (full list, 2,716 rows)

UPDATED 2026-06-06 · DATA: US CENSUS BUREAU ACS 5-YEAR ESTIMATES

Frequently asked

Which county has the highest czech population?

Cook County, Illinois ranks #1 with 49,240 (2010 American Community Survey).

What are the top 5 counties by czech population?

Cook County, Illinois, Harris County, Texas, DuPage County, Illinois, Cuyahoga County, Ohio, Douglas County, Nebraska.

How many counties are in this ranking?

2,716 counties qualify after filtering for population minimums and data availability. The ranking covers 2010 ACS 5-year data.

How is czech population measured?

Number of residents who are Czech ancestry (Ancestry, ACS detailed tables). Source: US Census Bureau, American Community Survey 5-year estimates (2010).