RANKING · 2024 ACS · 500 SHOWN OF 2,616

Largest Czech population, US counties

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 31,971. 2,616 counties qualify in total. Texas carries 9 of the top 25 entries.

All statesAll rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPCZECH POPULATIONVS 2000

01Cook County, ILIL5,194,62531,971–

02Harris County, TXTX5,045,02623,233–

03Maricopa County, AZAZ4,689,55817,042–

04Douglas County, NENE606,46016,342–

05Hennepin County, MNMN1,284,78414,352–

06Los Angeles County, CACA9,694,93414,196–

07DuPage County, ILIL934,29814,192–

08Lancaster County, NENE334,04913,737–

09Cuyahoga County, OHOH1,232,92511,501–

10Travis County, TXTX1,389,67011,391–

11Linn County, IAIA232,02810,493–

12King County, WAWA2,344,9399,520–

13Williamson County, TXTX752,8279,069–

14Tarrant County, TXTX2,248,4668,998–

15Dallas County, TXTX2,661,3978,720–

16Will County, ILIL712,2538,326–

17San Diego County, CACA3,282,2488,134–

18Bexar County, TXTX2,160,0887,821–

19Fort Bend County, TXTX975,1917,707–

20Orange County, CACA3,149,5077,001–

21Sarpy County, NENE208,3036,635–

22Dakota County, MNMN457,7106,547–

23Collin County, TXTX1,297,1796,392–

24Allegheny County, PAPA1,225,0356,327–

25McLennan County, TXTX272,0206,079–

26Dane County, WIWI590,3756,079–

27Milwaukee County, WIWI924,2165,871–

28Denton County, TXTX1,069,3465,494–

29St. Louis County, MOMO990,9115,111–

30Jefferson County, COCO580,4515,091–

31Waukesha County, WIWI417,2104,983–

32Lavaca County, TXTX20,6514,932–

33Clark County, NVNV2,407,2264,895–

34Ramsey County, MNMN541,6234,773–

35Montgomery County, TXTX781,1944,768–

36Kane County, ILIL525,7574,685–

37Wharton County, TXTX42,0604,678–

38Suffolk County, NYNY1,546,0904,626–

39Brown County, WIWI275,8034,599–

40Oakland County, MIMI1,288,3374,558–

41New York County, NYNY1,664,8624,543–

42Bell County, TXTX402,2484,493–

43Brazoria County, TXTX419,0804,479–

44Brazos County, TXTX249,0884,463–

45Fairfax County, VAVA1,167,8734,423–

46Johnson County, KSKS636,9064,362–

47Denver County, COCO740,6134,309–

48Scott County, MNMN159,0174,257–

49Polk County, IAIA516,5464,185–

50Multnomah County, OROR795,3914,119–

51Pima County, AZAZ1,074,6854,116–

52Johnson County, IAIA160,0444,087–

53Riverside County, CACA2,544,9164,083–

54Lake County, ILIL719,3393,973–

55Pinellas County, FLFL948,5633,960–

56Manitowoc County, WIWI81,7103,874–

57El Paso County, COCO757,0403,782–

58Palm Beach County, FLFL1,575,7263,779–

59Wake County, NCNC1,257,2353,757–

60Kings County, NYNY2,653,9633,734–

61Washington County, MNMN286,8953,712–

62Oklahoma County, OKOK822,1253,672–

63Santa Clara County, CACA1,914,3913,671–

64Anoka County, MNMN381,6053,645–

65McHenry County, ILIL317,7513,610–

66Broward County, FLFL2,013,3173,503–

67Franklin County, OHOH1,361,5363,459–

68Summit County, OHOH538,3763,351–

69Minnehaha County, SDSD212,6913,344–

70Douglas County, COCO399,3963,333–

71Saunders County, NENE23,7023,282–

72Lee County, FLFL875,6073,228–

73Nassau County, NYNY1,398,9393,206–

74Arapahoe County, COCO673,8203,143–

75Middlesex County, MAMA1,669,9793,136–

76Fayette County, TXTX25,4593,125–

77Rice County, MNMN69,9393,087–

78Queens County, NYNY2,358,1823,068–

79Contra Costa County, CACA1,170,0702,920–

80Larimer County, COCO377,2922,914–

81Hillsborough County, FLFL1,574,1152,908–

82Victoria County, TXTX92,6562,886–

83Ellis County, TXTX240,8672,797–

84Pierce County, WAWA946,2882,789–

85Sacramento County, CACA1,618,4602,779–

86Racine County, WIWI198,9192,760–

87Alameda County, CACA1,636,6302,754–

88Cass County, NDND201,7942,740–

89Baltimore County, MDMD847,6502,697–

90Wayne County, MIMI1,769,0382,672–

91Hays County, TXTX304,3902,647–

92Ventura County, CACA830,8512,626–

93Montgomery County, MDMD1,074,5822,598–

94Kent County, MIMI675,2322,593–

95Galveston County, TXTX372,2072,592–

96Westmoreland County, PAPA349,3242,585–

97Western Connecticut Planning Region, CTCT640,4822,467–

98Mecklenburg County, NCNC1,233,3832,466–

99La Crosse County, WIWI121,3392,464–

100Macomb County, MIMI886,2212,455–

101Boulder County, COCO328,5602,450–

102Medina County, OHOH185,0252,438–

103Olmsted County, MNMN166,7312,434–

104Marathon County, WIWI139,4322,430–

105District of Columbia, DCDC693,6452,378–

106Le Sueur County, MNMN29,4532,345–

107Philadelphia County, PAPA1,574,2812,344–

108Jackson County, MOMO732,9942,341–

109Orange County, FLFL1,528,0022,314–

110San Bernardino County, CACA2,224,0912,289–

111Tulsa County, OKOK698,7822,272–

112Nueces County, TXTX352,9922,250–

113Salt Lake County, UTUT1,220,9162,250–

114Ada County, IDID546,1412,229–

115Snohomish County, WAWA870,6562,225–

116Montgomery County, PAPA877,6432,222–

117Comal County, TXTX209,1662,220–

118Wright County, MNMN157,5592,205–

119Pasco County, FLFL674,5162,194–

120Genesee County, MIMI401,0932,191–

121Butler County, NENE8,5072,183–

122Bergen County, NJNJ977,0262,176–

123Lorain County, OHOH323,2192,162–

124Sarasota County, FLFL479,9582,160–

125Sedgwick County, KSKS538,4332,155–

126Westchester County, NYNY1,015,7432,150–

127Fulton County, GAGA1,098,7912,123–

128Clark County, WAWA532,1192,104–

129Ocean County, NJNJ673,7462,062–

130San Francisco County, CACA826,0792,058–

131Brevard County, FLFL663,9822,047–

132Spokane County, WAWA558,3442,019–

133Adams County, COCO554,6681,997–

134Washington County, OROR611,7081,994–

135Lake County, OHOH232,2171,941–

136Chester County, PAPA557,1161,902–

137Yavapai County, AZAZ252,5521,872–

138St. Louis County, MNMN200,5181,862–

139San Mateo County, CACA743,5681,861–

140Dodge County, NENE38,0571,861–

141Colorado County, TXTX21,4391,842–

142Black Hawk County, IAIA131,5321,821–

143Steele County, MNMN37,4641,806–

144Sonoma County, CACA486,4441,804–

145Austin County, TXTX33,6251,802–

146Clackamas County, OROR426,2801,800–

147Howard County, MDMD339,1831,794–

148Volusia County, FLFL606,5731,779–

149Bucks County, PAPA647,8281,751–

150Morris County, NJNJ524,2511,742–

151Portage County, OHOH163,4041,735–

152Lake County, ININ504,6121,726–

153Platte County, NENE35,6491,691–

154Washtenaw County, MIMI370,2141,667–

155Weld County, COCO378,4261,666–

156St. Charles County, MOMO426,4991,659–

157Worcester County, MAMA888,5021,653–

158Saline County, NENE14,9961,649–

159Washoe County, NVNV509,3861,642–

160Capitol Planning Region, CTCT994,1151,639–

161Anne Arundel County, MDMD603,3801,630–

162Gwinnett County, GAGA1,018,0991,628–

163Manatee County, FLFL468,2001,607–

164Duval County, FLFL1,062,9631,605–

165Baltimore, MDMD569,9971,601–

166Kewaunee County, WIWI20,7581,597–

167Outagamie County, WIWI195,8941,597–

168Harford County, MDMD266,4461,595–

169Geauga County, OHOH95,6761,593–

170Pennington County, SDSD116,7921,588–

171Miami-Dade County, FLFL2,802,0291,581–

172Cobb County, GAGA793,3451,581–

173Lane County, OROR381,5841,575–

174Kendall County, ILIL145,4701,567–

175Monmouth County, NJNJ651,0351,561–

176Marion County, ININ992,1961,559–

177Burleson County, TXTX20,5491,551–

178Carver County, MNMN114,3791,547–

179Bernalillo County, NMNM667,6011,539–

180Hamilton County, OHOH838,4181,538–

181Hall County, NENE63,6331,525–

182Loudoun County, VAVA449,7491,521–

183Buffalo County, NENE51,1721,515–

184Madison County, ILIL263,1101,477–

185Ottawa County, MIMI308,4591,476–

186Erie County, NYNY946,7411,468–

187Hamilton County, ININ387,0361,457–

188St. Croix County, WIWI98,2761,452–

189Collier County, FLFL417,1311,449–

190Monroe County, NYNY750,5061,435–

191Fresno County, CACA1,035,4561,433–

192Stark County, OHOH373,7711,430–

193Porter County, ININ176,0491,428–

194Winnebago County, WIWI174,2181,427–

195DeKalb County, GAGA774,3941,411–

196Yankton County, SDSD23,6351,411–

197Ingham County, MIMI289,7091,410–

198Barron County, WIWI46,4841,399–

199Eau Claire County, WIWI109,0331,398–

200Erie County, PAPA265,8321,395–

201Orange County, NYNY417,6691,377–

202Madison County, NENE36,1061,373–

203Winneshiek County, IAIA19,7331,366–

204Butler County, PAPA200,1691,356–

205Jackson County, TXTX15,3931,356–

206St. Johns County, FLFL346,3281,353–

207Charlotte County, FLFL217,2121,352–

208Scott County, IAIA175,2591,350–

209Guadalupe County, TXTX201,1111,348–

210Anchorage, AKAK287,1551,344–

211New Castle County, DEDE588,0261,343–

212Baldwin County, ALAL267,7611,341–

213Davidson County, TNTN745,9041,331–

214Chippewa County, WIWI67,6141,319–

215Milam County, TXTX26,2581,307–

216Somerset County, NJNJ356,4861,306–

217Placer County, CACA442,0811,302–

218Santa Cruz County, CACA258,8521,290–

219Douglas County, KSKS120,9201,284–

220Deschutes County, OROR213,0721,283–

221Stark County, NDND34,0131,257–

222Pottawattamie County, IAIA92,9961,256–

223McLeod County, MNMN36,6311,236–

224Norfolk County, MAMA739,7491,223–

225Kenosha County, WIWI168,4481,220–

226Berrien County, MIMI152,4441,219–

227Burlington County, NJNJ481,4391,218–

228St. Louis, MOMO278,1441,210–

229Charleston County, SCSC436,2001,210–

230Utah County, UTUT759,8591,209–

231Rock County, WIWI166,4721,209–

232Story County, IAIA101,2911,207–

233Prince William County, VAVA502,9661,205–

234Suffolk County, MAMA791,8911,203–

235Lucas County, OHOH423,3471,200–

236Marin County, CACA253,6941,187–

237Cleveland County, OKOK303,9731,185–

238Benton County, IAIA26,0041,182–

239Washington County, PAPA210,8021,174–

240Virginia Beach, VAVA453,7371,173–

241Grand Forks County, NDND74,5011,171–

242Saginaw County, MIMI187,6881,162–

243Washington County, ARAR271,2131,160–

244Montgomery County, OHOH539,5981,157–

245Canadian County, OKOK187,1891,151–

246Langlade County, WIWI19,5341,151–

247Jefferson County, MOMO233,1321,150–

248Jefferson County, KYKY795,2221,121–

249Winnebago County, ILIL283,6741,114–

250Cass County, NENE27,6571,109–

251Greene County, MOMO309,2861,101–

252Rockland County, NYNY357,3971,098–

253Delaware County, PAPA580,9371,096–

254Seward County, NENE18,0321,084–

255Lancaster County, PAPA563,1591,084–

256Middlesex County, NJNJ883,3351,079–

257Essex County, NJNJ896,3791,078–

258Hill County, TXTX39,5031,078–

259Naugatuck Valley Planning Region, CTCT463,3491,072–

260Lehigh County, PAPA384,3831,071–

261Essex County, MAMA826,6531,064–

262Colfax County, NENE10,9341,055–

263Tom Green County, TXTX120,6021,054–

264Walworth County, WIWI106,1271,053–

265Mercer County, NJNJ399,2891,052–

266Okaloosa County, FLFL221,8101,051–

267Stearns County, MNMN164,1101,043–

268Shiawassee County, MIMI67,6811,040–

269Frederick County, MDMD302,8831,036–

270Douglas County, MNMN40,1201,033–

271Fayette County, PAPA123,0211,029–

272Seminole County, FLFL491,8841,026–

273Beaver County, PAPA166,0321,025–

274Tama County, IAIA16,7961,021–

275Durham County, NCNC347,2401,015–

276San Joaquin County, CACA823,8151,009–

277Luzerne County, PAPA332,1261,000–

278Clinton County, MIMI80,432989–

279St. Joseph County, ININ272,861983–

280Union County, NJNJ601,863982–

281South Central Connecticut Planning Region, CTCT578,741980–

282Polk County, FLFL874,790971–

283Honolulu County, HIHI988,703968–

284Washington County, WIWI139,238962–

285Horry County, SCSC427,551961–

286Bastrop County, TXTX118,908961–

287Broome County, NYNY195,736958–

288Hillsborough County, NHNH433,415954–

289Shelby County, TNTN910,226946–

290Grant County, WIWI52,446945–

291Lubbock County, TXTX328,906938–

292Platte County, MOMO114,400933–

293York County, PAPA473,197933–

294DeWitt County, TXTX20,309933–

295Benton County, ARAR332,554929–

296Pulaski County, ARAR404,611929–

297Arlington County, VAVA243,931927–

298DeKalb County, ILIL101,835924–

299Charles Mix County, SDSD9,303922–

300Saratoga County, NYNY241,343921–

301Saline County, KSKS53,377910–

302Onondaga County, NYNY466,584910–

303Gage County, NENE21,711909–

304Greenville County, SCSC583,125909–

305Gloucester County, NJNJ312,638904–

306Ashtabula County, OHOH96,713902–

307Marion County, OROR355,777902–

308Ozaukee County, WIWI94,346897–

309Lincoln County, SDSD77,145891–

310Cambria County, PAPA128,968889–

311Champaign County, ILIL209,972887–

312Delaware County, OHOH242,032887–

313Isanti County, MNMN44,386886–

314Chittenden County, VTVT169,115882–

315Kern County, CACA927,068880–

316Mahoning County, OHOH224,706877–

317York County, MEME222,434869–

318Knox County, TNTN511,453869–

319Bon Homme County, SDSD7,244866–

320Thurston County, WAWA304,261862–

321Pine County, MNMN30,472858–

322LaSalle County, ILIL107,773857–

323Dallas County, IAIA118,457853–

324Crow Wing County, MNMN69,132853–

325Vernon County, WIWI31,443851–

326Greater Bridgeport Planning Region, CTCT337,697849–

327Sherburne County, MNMN104,194846–

328LaPorte County, ININ111,294827–

329Butte County, CACA209,211817–

330Flathead County, MTMT115,429814–

331Shawnee County, KSKS178,607813–

332Muskegon County, MIMI177,901813–

333Clay County, MOMO265,032809–

334Passaic County, NJNJ531,624807–

335Parker County, TXTX184,767800–

336Benton County, WAWA221,722800–

337Kitsap County, WAWA283,374799–

338Matagorda County, TXTX36,463798–

339Wood County, WIWI74,060797–

340Burleigh County, NDND103,251792–

341Sauk County, WIWI66,652792–

342Tippecanoe County, ININ190,456790–

343Dubuque County, IAIA99,381789–

344Hudson County, NJNJ735,033789–

345Richland County, SCSC434,956787–

346Howard County, IAIA9,415786–

347Fillmore County, NENE5,458785–

348Price County, WIWI13,988785–

349Mohave County, AZAZ228,102782–

350Livingston County, MIMI197,315782–

351Yellowstone County, MTMT172,692776–

352San Luis Obispo County, CACA282,367769–

353Richmond County, NYNY501,290768–

354Cerro Gordo County, IAIA42,372763–

355Grand Traverse County, MIMI96,729758–

356Pinal County, AZAZ539,380752–

357Jackson County, OROR221,795752–

358Rockingham County, NHNH324,077746–

359Kalamazoo County, MIMI263,795744–

360Northampton County, PAPA324,411744–

361Cumberland County, MEME317,222743–

362St. Clair County, ILIL250,708741–

363Midland County, TXTX187,855741–

364Prince George's County, MDMD970,374739–

365Waller County, TXTX69,858735–

366Sussex County, NJNJ148,063731–

367Kaufman County, TXTX209,235730–

368Santa Barbara County, CACA442,065729–

369El Dorado County, CACA192,323728–

370Ulster County, NYNY183,330728–

371Lake County, FLFL456,068724–

372Woodbury County, IAIA106,649720–

373Washington County, NENE21,302719–

374Beaufort County, SCSC204,433719–

375Citrus County, FLFL171,666717–

376Kendall County, TXTX53,289715–

377Chesterfield County, VAVA397,148713–

378Polk County, MNMN30,545712–

379Knox County, NENE8,335704–

380Wood County, OHOH134,176704–

381Grayson County, TXTX153,613703–

382Henrico County, VAVA342,775701–

383Yolo County, CACA224,410700–

384Butler County, OHOH400,128698–

385Calumet County, WIWI53,982695–

386Monroe County, WIWI46,572691–

387Sheboygan County, WIWI118,047691–

388Southeastern Connecticut Planning Region, CTCT284,015690–

389San Patricio County, TXTX72,053690–

390McLean County, ILIL171,419689–

391Pueblo County, COCO169,277686–

392Adams County, NENE31,071681–

393Chisago County, MNMN59,142680–

394Missoula County, MTMT123,513680–

395Onslow County, NCNC217,175680–

396Guilford County, NCNC562,234677–

397Monterey County, CACA433,729676–

398Portage County, WIWI71,943676–

399Hampshire County, MAMA164,065673–

400Henderson County, TXTX88,595671–

401Monroe County, MIMI156,004670–

402Washington County, RIRI129,795666–

403Berks County, PAPA440,072664–

404Wilson County, TXTX56,139664–

405Licking County, OHOH185,564662–

406Camden County, NJNJ535,799658–

407Walsh County, NDND10,179655–

408Blue Earth County, MNMN70,634653–

409Grundy County, ILIL54,052650–

410Lackawanna County, PAPA216,502650–

411Bay County, FLFL204,479649–

412Northwest Hills Planning Region, CTCT114,690646–

413Clay County, MNMN67,734645–

414Douglas County, WIWI43,990639–

415Union County, NCNC267,674637–

416Marion County, FLFL442,660636–

417Richmond, VAVA237,257636–

418Marinette County, WIWI42,574635–

419Broomfield County, COCO79,174634–

420Lower Connecticut River Valley Planning Region, CTCT177,311633–

421Hunterdon County, NJNJ131,781632–

422Alexandria, VAVA160,662631–

423Hernando County, FLFL221,701630–

424Canyon County, IDID275,123629–

425Boone County, MOMO191,746626–

426Oconto County, WIWI40,195626–

427Matanuska-Susitna, AKAK118,666622–

428Iowa County, IAIA16,504621–

429Jefferson County, WIWI86,505621–

430Chatham County, GAGA311,855619–

431New Hanover County, NCNC245,959617–

432Calhoun County, TXTX19,599616–

433Wyandotte County, KSKS170,597615–

434Cherokee County, GAGA299,273610–

435Trumbull County, OHOH198,972609–

436Forsyth County, GAGA282,805608–

437Solano County, CACA455,376607–

438Allegan County, MIMI123,188605–

439Indian River County, FLFL172,799603–

440Buncombe County, NCNC277,417600–

441Mower County, MNMN40,971599–

442Cumberland County, PAPA277,270599–

443Kingfisher County, OKOK15,795598–

444Cochise County, AZAZ126,332595–

445Martin County, FLFL166,272595–

446Santa Fe County, NMNM156,907590–

447Fond du Lac County, WIWI104,669590–

448Marshall County, IAIA39,890586–

449Albany County, NYNY321,225586–

450Republic County, KSKS4,640585–

451Dutchess County, NYNY300,708585–

452Williamson County, TNTN272,061585–

453Rockwall County, TXTX140,738585–

454York County, SCSC306,887583–

455Pierce County, WIWI43,519579–

456Laramie County, WYWY102,938579–

457Providence County, RIRI678,179577–

458Eaton County, MIMI109,581576–

459Becker County, MNMN35,497574–

460Freeborn County, MNMN30,440570–

461Wayne County, OHOH116,758570–

462Madison County, ALAL433,516567–

463Bristol County, MAMA593,640566–

464Goodhue County, MNMN48,195566–

465Iowa County, WIWI23,951563–

466Escambia County, FLFL333,834561–

467St. Mary's County, MDMD116,692561–

468Berkeley County, SCSC274,666561–

469Dodge County, MNMN21,376560–

470Dodge County, WIWI89,097560–

471Coconino County, AZAZ144,368558–

472Mesa County, COCO162,845558–

473Peoria County, ILIL178,553558–

474Santa Rosa County, FLFL211,115557–

475Allen County, ININ402,329557–

476Monroe County, PAPA167,179557–

477Bronx County, NYNY1,406,332555–

478Whatcom County, WAWA236,392555–

479Cedar County, IAIA18,359554–

480Oneida County, WIWI38,131554–

481Carroll County, MDMD176,677552–

482Shawano County, WIWI41,560552–

483Rensselaer County, NYNY160,510549–

484Kankakee County, ILIL105,525548–

485Winona County, MNMN50,523546–

486Hampden County, MAMA464,338545–

487Garfield County, OKOK61,779545–

488Crawford County, WIWI15,910541–

489Tangipahoa Parish, LALA141,346538–

490Jefferson County, NENE7,070535–

491Shasta County, CACA181,648529–

492Fayette County, KYKY329,751529–

493Centre County, PAPA157,393529–

494Dorchester County, SCSC178,397527–

495Greene County, OHOH174,322525–

496Lawrence County, SDSD29,459525–

497Polk County, WIWI45,803525–

498Gallatin County, MTMT128,740524–

499Johnson County, TXTX218,048520–

500Jones County, IAIA21,253519–

SHOWING 1–500 OF 2,616

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Download CSV (full list, 2,616 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 31,971 (2024 American Community Survey).

What are the top 5 counties by czech population?

Cook County, Illinois, Harris County, Texas, Maricopa County, Arizona, Douglas County, Nebraska, Hennepin County, Minnesota.

How many counties are in this ranking?

2,616 counties qualify after filtering for population minimums and data availability. The ranking covers 2024 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 (2024).