RANKING · 2010 CENSUS · 500 SHOWN OF 2,716

Highest Czech population share, US counties · 2010

US counties ranked by the share of all residents who are Czech ancestry (2023 American Community Survey). A concentration measure: Czech residents as a percentage of total population. Butler County, Nebraska leads at 34.8%. 2,716 counties qualify in total. Nebraska carries 11 of the top 25 entries.

All statesAll rankings

SAME RANKING BYCities States Metros

YEAR2010 2020 2024

RANKPLACESTATEPOPCZECH SHAREVS 2000

01Butler County, NENE8,50734.8%–

02Lavaca County, TXTX20,65131.0%–

03Saunders County, NENE23,70224.3%–

04Colfax County, NENE10,93420.9%–

05Bon Homme County, SDSD7,24420.6%–

06Saline County, NENE14,99619.0%–

07Fayette County, TXTX25,45917.4%–

08Garfield County, NENE1,71017.3%–

09Valley County, NENE4,09417.1%–

10Wharton County, TXTX42,06015.0%–

11Fillmore County, NENE5,45814.4%–

12Stanton County, NENE5,74413.4%–

13Knox County, NENE8,33513.3%–

14Jackson County, TXTX15,39313.0%–

15Republic County, KSKS4,64012.7%–

16Howard County, IAIA9,41512.5%–

17Kewaunee County, WIWI20,75812.5%–

18Rawlins County, KSKS2,43112.3%–

19Boyd County, NENE1,67412.2%–

20Seward County, NENE18,03212.2%–

21Le Sueur County, MNMN29,45312.2%–

22Burleson County, TXTX20,54911.9%–

23Charles Mix County, SDSD9,30311.7%–

24Tama County, IAIA16,79611.6%–

25Brule County, SDSD5,27811.5%–

26Colorado County, TXTX21,43911.2%–

27Gregory County, SDSD4,03710.9%–

28Austin County, TXTX33,62510.8%–

29Pawnee County, NENE2,51010.6%–

30Arthur County, NENE3969.6%–

31Walsh County, NDND10,1799.3%–

32Manitowoc County, WIWI81,7109.3%–

33Ellsworth County, KSKS6,2579.1%–

34Dodge County, NENE38,0578.7%–

35Dunn County, NDND4,0588.5%–

36Stanley County, SDSD3,0188.4%–

37Yankton County, SDSD23,6358.2%–

38Holt County, NENE10,0678.0%–

39Tripp County, SDSD5,7087.7%–

40Baylor County, TXTX3,4727.7%–

41Price County, WIWI13,9887.5%–

42Pierce County, NENE7,3787.5%–

43Stark County, NDND34,0137.3%–

44Crawford County, WIWI15,9107.3%–

45Platte County, NENE35,6497.2%–

46Linn County, IAIA232,0287.0%–

47Langlade County, WIWI19,5346.9%–

48Gonzales County, TXTX20,1596.8%–

49Cuming County, NENE8,8236.8%–

50Benton County, IAIA26,0046.7%–

51Judith Basin County, MTMT2,1626.7%–

52Steele County, MNMN37,4646.6%–

53Lancaster County, NENE334,0496.5%–

54Winneshiek County, IAIA19,7336.5%–

55Howard County, NENE6,5386.3%–

56Haakon County, SDSD1,8026.2%–

57Cass County, NENE27,6576.2%–

58Victoria County, TXTX92,6566.1%–

59Polk County, NENE5,2706.0%–

60Decatur County, KSKS2,7166.0%–

61Hamilton County, NENE9,6786.0%–

62Hettinger County, NDND2,4925.9%–

63Clay County, NENE6,1705.9%–

64Boone County, NENE5,3555.9%–

65Jefferson County, NENE7,0705.8%–

66Gage County, NENE21,7115.8%–

67Rice County, MNMN69,9395.6%–

68Slope County, NDND6285.6%–

69Nuckolls County, NENE4,1005.6%–

70Matagorda County, TXTX36,4635.6%–

71Iowa County, IAIA16,5045.6%–

72Renville County, MNMN14,3565.4%–

73Calhoun County, TXTX19,5995.2%–

74Rush County, KSKS2,8455.2%–

75Washington County, KSKS5,5335.2%–

76Madison County, NENE36,1065.2%–

77Milam County, TXTX26,2584.9%–

78Washington County, NENE21,3024.9%–

79Mellette County, SDSD2,1374.9%–

80Sarpy County, NENE208,3034.9%–

81York County, NENE14,5644.9%–

82Merrick County, NENE7,9054.8%–

83DeWitt County, TXTX20,3094.7%–

84Jackson County, MNMN9,8574.7%–

85Buffalo County, NENE51,1724.7%–

86Wayne County, NENE10,0204.7%–

87Jones County, IAIA21,2534.6%–

88Thayer County, NENE4,8424.5%–

89Richland County, WIWI17,0364.5%–

90Kimball County, NENE3,3914.5%–

91Douglas County, SDSD2,8884.5%–

92Hinsdale County, COCO7534.3%–

93McLeod County, MNMN36,6314.3%–

94Johnson County, IAIA160,0444.3%–

95Vernon County, WIWI31,4434.2%–

96Cedar County, IAIA18,3594.2%–

97Hall County, NENE63,6334.2%–

98Douglas County, NENE606,4604.2%–

99Scott County, MNMN159,0174.2%–

100Sanborn County, SDSD2,3884.2%–

101Chickasaw County, IAIA11,6634.2%–

102Wheeler County, NENE7894.1%–

103Custer County, NENE10,5004.1%–

104Jewell County, KSKS2,8304.1%–

105Greeley County, NENE2,1544.1%–

106Aurora County, SDSD2,8014.1%–

107Mills County, IAIA14,7934.1%–

108Nelson County, NDND2,9634.1%–

109Pocahontas County, IAIA6,8194.0%–

110Nance County, NENE3,2904.0%–

111Hancock County, IAIA10,5283.9%–

112Richland County, NDND16,7313.9%–

113Red Lake County, MNMN3,9403.9%–

114Bowman County, NDND2,7623.9%–

115Rusk County, WIWI14,1463.9%–

116Hyde County, SDSD1,1913.9%–

117Sherman County, NENE2,9243.9%–

118Runnels County, TXTX9,6933.9%–

119Glasscock County, TXTX1,1283.9%–

120Adams County, NENE31,0713.8%–

121Douglas County, MNMN40,1203.8%–

122Fergus County, MTMT11,8253.8%–

123Refugio County, TXTX6,6573.7%–

124Barron County, WIWI46,4843.7%–

125Rock County, NENE1,2593.7%–

126Pine County, MNMN30,4723.7%–

127Dundy County, NENE1,5683.7%–

128Hill County, TXTX39,5033.6%–

129Pope County, MNMN11,4203.6%–

130Kearny County, KSKS3,8883.6%–

131Juneau County, WIWI26,6493.6%–

132Marion County, KSKS11,6343.5%–

133Goliad County, TXTX7,2083.5%–

134Dawes County, NENE7,8583.5%–

135Hanson County, SDSD3,4563.5%–

136Banner County, NENE6863.5%–

137Thomas County, KSKS7,7253.5%–

138Dixon County, NENE5,6023.5%–

139Redwood County, MNMN15,2653.4%–

140Rooks County, KSKS4,6463.4%–

141Clay County, SDSD15,0313.4%–

142Keya Paha County, NENE7923.4%–

143Iowa County, WIWI23,9513.4%–

144Perkins County, NENE2,8493.3%–

145Webster County, IAIA36,8383.3%–

146Wilkin County, MNMN6,2883.3%–

147Lincoln County, KSKS2,8613.3%–

148Red Willow County, NENE10,3073.3%–

149Falls County, TXTX17,8693.3%–

150Goshen County, WYWY12,6403.3%–

151Chippewa County, WIWI67,6143.2%–

152Lyman County, SDSD3,6943.2%–

153Antelope County, NENE6,3523.2%–

154Mahnomen County, MNMN5,1533.2%–

155Bennett County, SDSD3,3073.2%–

156Cherry County, NENE5,5613.2%–

157Shiawassee County, MIMI67,6813.2%–

158Petroleum County, MTMT5483.2%–

159Sherman County, KSKS5,7633.2%–

160Marshall County, MNMN8,7983.1%–

161Hitchcock County, NENE2,4673.1%–

162Lake of the Woods County, MNMN3,7703.1%–

163Liberty County, MTMT1,9573.1%–

164Washington County, IAIA22,6673.0%–

165Pennington County, MNMN13,6863.0%–

166Hughes County, SDSD17,5703.0%–

167Billings County, NDND1,0713.0%–

168Davison County, SDSD20,0693.0%–

169Ottawa County, KSKS5,7443.0%–

170Marshall County, KSKS9,8523.0%–

171Trego County, KSKS2,7403.0%–

172Nemaha County, NENE7,1022.9%–

173Kingfisher County, OKOK15,7952.9%–

174Oconto County, WIWI40,1952.9%–

175Lincoln County, NENE33,3032.8%–

176Leelanau County, MIMI22,9822.8%–

177Morton County, NDND34,6012.8%–

178Noble County, OKOK10,8992.8%–

179Frontier County, NENE2,6552.8%–

180Bayfield County, WIWI16,7872.8%–

181Fallon County, MTMT2,9592.8%–

182Carver County, MNMN114,3792.8%–

183Jerauld County, SDSD1,6542.8%–

184Adams County, WIWI21,7522.8%–

185Blaine County, NENE4582.8%–

186Grant County, WIWI52,4462.8%–

187Cheyenne County, NENE9,5282.8%–

188Eddy County, NDND2,3292.8%–

189Foard County, TXTX1,0442.8%–

190Harrison County, IAIA14,6232.7%–

191Grant County, NENE5612.7%–

192Webster County, NENE3,3362.7%–

193Freeborn County, MNMN30,4402.7%–

194Washburn County, WIWI17,0872.7%–

195Clayton County, IAIA16,8452.7%–

196Door County, WIWI30,6162.7%–

197Turner County, SDSD9,3142.7%–

198Karnes County, TXTX15,0182.7%–

199Poweshiek County, IAIA18,3682.6%–

200Cerro Gordo County, IAIA42,3722.6%–

201Roseau County, MNMN15,2462.6%–

202Brown County, WIWI275,8032.6%–

203Pierce County, WIWI43,5192.6%–

204Polk County, MNMN30,5452.6%–

205McLennan County, TXTX272,0202.5%–

206DuPage County, ILIL934,2982.5%–

207Harlan County, NENE3,0002.5%–

208Live Oak County, TXTX11,9292.5%–

209Brazos County, TXTX249,0882.5%–

210Williamson County, TXTX752,8272.4%–

211Otoe County, NENE16,5312.4%–

212Worth County, IAIA7,3382.4%–

213Grant County, NDND2,2062.4%–

214Houston County, MNMN18,4002.4%–

215Johnson County, NENE5,2182.4%–

216Burt County, NENE6,6782.4%–

217Ellis County, TXTX240,8672.4%–

218Gosper County, NENE1,8032.4%–

219Marshall County, IAIA39,8902.4%–

220Mower County, MNMN40,9712.4%–

221Bastrop County, TXTX118,9082.4%–

222Big Stone County, MNMN5,0542.3%–

223Morrill County, NENE4,4042.3%–

224Chouteau County, MTMT5,8652.3%–

225Menominee County, MIMI22,9412.3%–

226Pawnee County, KSKS5,9912.3%–

227Aitkin County, MNMN16,2522.3%–

228Cavalier County, NDND3,4972.3%–

229Hutchinson County, SDSD7,4132.3%–

230Box Butte County, NENE10,4942.3%–

231Russell County, KSKS6,5812.2%–

232Cedar County, NENE8,3732.2%–

233Osborne County, KSKS3,2852.2%–

234Wright County, MNMN157,5592.2%–

235Sargent County, NDND3,7112.2%–

236Ramsey County, NDND11,5302.2%–

237Grundy County, IAIA12,3612.2%–

238Grant County, OKOK4,0672.2%–

239Becker County, MNMN35,4972.2%–

240Traill County, NDND7,9202.2%–

241Grand Forks County, NDND74,5012.2%–

242Toole County, MTMT5,2112.2%–

243Cloud County, KSKS8,8332.1%–

244Marinette County, WIWI42,5742.1%–

245Marshall County, SDSD4,4262.1%–

246Monona County, IAIA8,5392.1%–

247La Crosse County, WIWI121,3392.1%–

248Sully County, SDSD1,4792.1%–

249Sawyer County, WIWI18,8462.1%–

250Taylor County, WIWI20,1182.1%–

251Brown County, NENE2,8262.1%–

252Sioux County, NENE1,1882.1%–

253Robertson County, TXTX17,8392.1%–

254Kenedy County, TXTX3192.1%–

255Racine County, WIWI198,9192.0%–

256Union County, IAIA11,8292.0%–

257Jones County, SDSD9132.0%–

258Sumner County, KSKS22,3122.0%–

259Jackson County, SDSD2,6662.0%–

260Grundy County, ILIL54,0522.0%–

261Sherburne County, MNMN104,1942.0%–

262Keith County, NENE8,1002.0%–

263Dodge County, MNMN21,3762.0%–

264Dawson County, NENE24,4522.0%–

265Beltrami County, MNMN47,0552.0%–

266Humboldt County, NVNV17,2672.0%–

267Eau Claire County, WIWI109,0332.0%–

268Kendall County, ILIL145,4702.0%–

269Shawano County, WIWI41,5602.0%–

270Vilas County, WIWI23,7612.0%–

271Medina County, OHOH185,0252.0%–

272Jackson County, WIWI20,9992.0%–

273Pepin County, WIWI7,5132.0%–

274Geauga County, OHOH95,6762.0%–

275Clear Creek County, COCO8,9941.9%–

276Hardin County, IAIA16,4551.9%–

277Dakota County, MNMN457,7101.9%–

278Monroe County, WIWI46,5721.9%–

279Washington County, TXTX38,2881.9%–

280Chase County, NENE3,7181.9%–

281Will County, ILIL712,2531.9%–

282Winnebago County, IAIA10,2511.9%–

283Richardson County, NENE7,5301.9%–

284Mitchell County, IAIA10,6501.9%–

285Ringgold County, IAIA4,6421.9%–

286McMullen County, TXTX5441.9%–

287Somervell County, TXTX10,2611.9%–

288Hill County, MTMT16,1671.9%–

289Brazoria County, TXTX419,0801.9%–

290Golden Valley County, NDND1,8081.9%–

291Hooker County, NENE6861.9%–

292Furnas County, NENE4,5241.9%–

293Pottawatomie County, KSKS27,1861.9%–

294Brookings County, SDSD37,6351.9%–

295Hayes County, NENE8211.9%–

296Thomas County, NENE6391.9%–

297Dawson County, MTMT8,6921.8%–

298Todd County, MNMN26,0601.8%–

299Oneida County, WIWI38,1311.8%–

300Goodhue County, MNMN48,1951.8%–

301McHenry County, ILIL317,7511.8%–

302Norman County, MNMN6,3361.8%–

303Scotts Bluff County, NENE35,5861.8%–

304Sauk County, WIWI66,6521.8%–

305Clay County, KSKS7,9901.8%–

306Wilson County, TXTX56,1391.8%–

307Garfield County, OKOK61,7791.8%–

308Sublette County, WYWY8,9291.8%–

309Nicollet County, MNMN34,2731.8%–

310Lincoln County, WIWI28,4031.8%–

311Minnehaha County, SDSD212,6911.8%–

312Black Hawk County, IAIA131,5321.8%–

313Meade County, KSKS3,8521.8%–

314Adams County, NDND2,2751.8%–

315Pennington County, SDSD116,7921.8%–

316Story County, IAIA101,2911.8%–

317Starke County, ININ23,4251.8%–

318Barton County, KSKS24,7901.8%–

319St. Croix County, WIWI98,2761.8%–

320Dickinson County, KSKS18,6371.8%–

321Marathon County, WIWI139,4321.8%–

322Blue Earth County, MNMN70,6341.8%–

323Kanabec County, MNMN16,6281.8%–

324Bandera County, TXTX22,8761.8%–

325Fillmore County, MNMN21,5401.8%–

326Hand County, SDSD3,1211.8%–

327Wood County, WIWI74,0601.8%–

328Madison County, IAIA17,2701.8%–

329Iron County, WIWI6,1271.7%–

330Brown County, MNMN25,5171.7%–

331Cuyahoga County, OHOH1,232,9251.7%–

332Hodgeman County, KSKS1,6191.7%–

333Anoka County, MNMN381,6051.7%–

334Waller County, TXTX69,8581.7%–

335Potter County, SDSD2,3771.7%–

336Lincoln County, SDSD77,1451.7%–

337Grant County, KSKS7,0281.7%–

338Phillips County, KSKS4,7281.7%–

339Clark County, WIWI35,0521.7%–

340Isanti County, MNMN44,3861.7%–

341Dickey County, NDND4,8951.7%–

342Stanton County, KSKS1,9861.7%–

343Adair County, IAIA7,4031.7%–

344Washington County, MNMN286,8951.7%–

345Lipscomb County, TXTX2,9551.7%–

346Lawrence County, SDSD29,4591.7%–

347Grimes County, TXTX34,2521.7%–

348Grand Traverse County, MIMI96,7291.7%–

349Steele County, NDND1,7971.7%–

350Meade County, SDSD30,7111.7%–

351Mille Lacs County, MNMN27,7531.7%–

352Nemaha County, KSKS10,0541.7%–

353Crawford County, IAIA16,2371.6%–

354Burke County, NDND2,1321.6%–

355Fort Bend County, TXTX975,1911.6%–

356Phelps County, NENE8,9941.6%–

357Winona County, MNMN50,5231.6%–

358Concho County, TXTX3,6071.6%–

359Ellis County, KSKS29,0751.6%–

360Charlevoix County, MIMI26,0361.6%–

361Lee County, TXTX18,7291.6%–

362Bosque County, TXTX18,9181.6%–

363Butte County, SDSD10,8561.6%–

364Carlton County, MNMN36,7111.6%–

365Yellow Medicine County, MNMN9,4771.6%–

366Ramsey County, MNMN541,6231.6%–

367Pottawattamie County, IAIA92,9961.6%–

368Waseca County, MNMN18,6881.6%–

369Buchanan County, IAIA20,8831.6%–

370Mercer County, NDND8,4411.6%–

371Saline County, KSKS53,3771.6%–

372Belmont County, OHOH64,4341.6%–

373Ashland County, WIWI16,2031.6%–

374Kingsbury County, SDSD5,2841.6%–

375Chambers County, TXTX57,5941.6%–

376Hays County, TXTX304,3901.6%–

377Hubbard County, MNMN22,3691.6%–

378Forest County, WIWI9,5741.6%–

379Carroll County, ILIL15,4191.5%–

380Graham County, KSKS2,3711.5%–

381Cass County, NDND201,7941.5%–

382Waukesha County, WIWI417,2101.5%–

383Broadwater County, MTMT8,4931.5%–

384Stearns County, MNMN164,1101.5%–

385Kandiyohi County, MNMN44,7201.5%–

386Burnett County, WIWI17,2231.5%–

387Dolores County, COCO2,4661.5%–

388Kearney County, NENE6,7901.5%–

389Mountrail County, NDND9,3951.5%–

390Bremer County, IAIA25,2961.5%–

391Mitchell County, KSKS5,5901.5%–

392Taylor County, IAIA5,8351.5%–

393Hennepin County, MNMN1,284,7841.5%–

394Columbia County, WIWI58,1321.5%–

395Fayette County, IAIA19,0471.5%–

396Olmsted County, MNMN166,7311.5%–

397Garza County, TXTX4,5101.5%–

398Dunn County, WIWI46,2231.5%–

399Dane County, WIWI590,3751.5%–

400Grand County, UTUT9,7901.5%–

401Polk County, TXTX53,4341.5%–

402Cass County, MNMN31,4301.5%–

403Clay County, MNMN67,7341.5%–

404Portage County, WIWI71,9431.5%–

405Day County, SDSD5,4841.5%–

406Boone County, IAIA26,7991.4%–

407Itasca County, MNMN45,4041.4%–

408Archer County, TXTX9,1291.4%–

409Chisago County, MNMN59,1421.4%–

410Spink County, SDSD6,1551.4%–

411Walworth County, WIWI106,1271.4%–

412Miami County, KSKS36,2401.4%–

413Polk County, WIWI45,8031.4%–

414Clinton County, MIMI80,4321.4%–

415Schleicher County, TXTX2,2451.4%–

416Lincoln County, MOMO66,6761.4%–

417Throckmorton County, TXTX1,5541.4%–

418Crow Wing County, MNMN69,1321.4%–

419Ozaukee County, WIWI94,3461.4%–

420Meeker County, MNMN23,6031.4%–

421Morrison County, MNMN34,6201.4%–

422Logan County, COCO20,6541.4%–

423Bell County, TXTX402,2481.4%–

424Appanoose County, IAIA12,0771.4%–

425Union County, SDSD17,4021.4%–

426Pembina County, NDND6,5681.4%–

427Petersburg, AKAK3,3941.4%–

428Canadian County, OKOK187,1891.4%–

429McCook County, SDSD5,9641.4%–

430Otter Tail County, MNMN61,0411.4%–

431Floyd County, IAIA14,9011.4%–

432Clearwater County, MNMN8,6471.4%–

433Kaufman County, TXTX209,2351.4%–

434Faulk County, SDSD2,1781.4%–

435Eagle County, COCO54,2911.4%–

436Trempealeau County, WIWI31,1711.4%–

437Hamilton County, IAIA14,9441.4%–

438Sheridan County, NENE4,8091.4%–

439Sheridan County, WYWY33,2411.4%–

440Powell County, MTMT7,1571.4%–

441Fremont County, IAIA6,5221.4%–

442Burleigh County, NDND103,2511.4%–

443Humboldt County, IAIA9,4091.4%–

444Outagamie County, WIWI195,8941.4%–

445Broomfield County, COCO79,1741.4%–

446Grant County, MNMN6,0851.3%–

447Edwards County, KSKS2,6401.3%–

448Watonwan County, MNMN11,4591.3%–

449Rains County, TXTX13,5421.3%–

450Sibley County, MNMN15,3561.3%–

451Minidoka County, IDID22,9111.3%–

452Houston County, TXTX22,3161.3%–

453Brown County, SDSD37,5611.3%–

454Carter County, MTMT1,3831.3%–

455McKenzie County, NDND15,1921.3%–

456Waushara County, WIWI25,2231.3%–

457Hall County, TXTX2,7371.3%–

458Blaine County, IDID25,5171.3%–

459Llano County, TXTX23,3531.3%–

460Thurston County, NENE6,7521.3%–

461Clark County, KSKS1,9001.3%–

462Atascosa County, TXTX53,5901.3%–

463Lac qui Parle County, MNMN6,7041.3%–

464Benton County, MNMN41,7441.3%–

465Portage County, OHOH163,4041.3%–

466McPherson County, KSKS30,0641.3%–

467Weston County, WYWY6,8401.3%–

468Lake County, OHOH232,2171.3%–

469McHenry County, NDND5,1301.3%–

470Koochiching County, MNMN11,5871.3%–

471Allamakee County, IAIA14,2381.3%–

472Galveston County, TXTX372,2071.3%–

473Mineral County, NVNV4,4071.3%–

474Lincoln County, MTMT22,3281.3%–

475Custer County, IDID4,6361.3%–

476Sanders County, MTMT14,0621.3%–

477Traverse County, MNMN3,1301.3%–

478Fall River County, SDSD7,4671.3%–

479Walker County, TXTX83,8421.3%–

480Winnebago County, WIWI174,2181.2%–

481Young County, TXTX18,1541.2%–

482San Patricio County, TXTX72,0531.2%–

483Esmeralda County, NVNV7291.2%–

484Washington County, WIWI139,2381.2%–

485Jackson County, COCO1,2111.2%–

486Madison County, MTMT10,0261.2%–

487McCone County, MTMT1,7201.2%–

488Deuel County, NENE1,8621.2%–

489Jefferson County, MOMO233,1321.2%–

490Palo Alto County, IAIA8,8991.2%–

491Rockwall County, TXTX140,7381.2%–

492Kane County, ILIL525,7571.2%–

493Carbon County, WYWY14,0131.2%–

494Washington County, COCO4,7321.2%–

495Kenosha County, WIWI168,4481.2%–

496Chaffee County, COCO20,8311.2%–

497Rappahannock County, VAVA7,4391.2%–

498Kane County, UTUT8,5971.2%–

499Sedgwick County, COCO2,2471.2%–

500Butler County, IAIA14,0491.2%–

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 share?

Butler County, Nebraska ranks #1 with 34.8% (2010 American Community Survey).

What are the top 5 counties by czech share?

Butler County, Nebraska, Lavaca County, Texas, Saunders County, Nebraska, Colfax County, Nebraska, Bon Homme County, South Dakota.

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 share measured?

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