Which county has the highest population density?

New York County, New York ranks #1 with 65,652 (1990 Decennial Census).

What are the top 5 counties by population density?

New York County, New York, Kings County, New York, Bronx County, New York, Queens County, New York, San Francisco County, California.

How many counties are in this ranking?

3,122 counties qualify after filtering for population minimums and data availability. The ranking covers 1990 Decennial Census data.

How is population density measured?

Residents per square mile of land area. Source: US Census Bureau, 1990 Decennial Census.

RANKING · 1990 CENSUS · 500 SHOWN OF 3,122

Most densely populated, US counties · 1990

US counties ranked by residents per square mile (1990).

Flip the list · Most sparsely populated, US counties →

All statesAll rankings

SAME RANKING BYCities States Metros

YEAR1990 2000 2010 2020 2025

RANKPLACESTATEPOPPOPULATION DENSITYVS –

1001St. Croix County, WIWI98,27670–

1002Mason County, KYKY16,93669–

1003Clarion County, PAPA36,68069–

1004Marion County, SCSC28,24269–

1005Greene County, NYNY47,23869–

1006Clay County, ININ26,41069–

1007Tuscola County, MIMI52,68069–

1008Hood County, TXTX70,50169–

1009Clarke County, VAVA15,60969–

1010Greene County, PAPA33,88569–

1011Gratiot County, MIMI41,19069–

1012Saline County, KSKS53,37768–

1013Morrow County, OHOH36,30568–

1014Warren County, NYNY65,02068–

1015Montgomery County, ININ38,95468–

1016Clearfield County, PAPA78,10068–

1017Chattahoochee County, GAGA8,46568–

1018Dyer County, TNTN36,32068–

1019Nassau County, FLFL106,87968–

1020Rockingham County, VAVA89,31668–

1021Fayette County, OHOH28,55268–

1022Westmoreland County, VAVA19,71568–

1023Yates County, NYNY24,54767–

1024Transylvania County, NCNC34,21167–

1025Highlands County, FLFL111,12267–

1026Carroll County, OHOH26,47567–

1027Mecosta County, MIMI42,32067–

1028Muhlenberg County, KYKY30,63467–

1029Hancock County, MSMS46,87367–

1030Henderson County, TXTX88,59567–

1031Colquitt County, GAGA47,43867–

1032Kaufman County, TXTX209,23567–

1033Polk County, OROR90,03767–

1034Marshall County, IAIA39,89067–

1035Cocke County, TNTN37,88967–

1036Kern County, CACA927,06867–

1037Rutland County, VTVT59,65367–

1038Lincoln County, MEME36,59567–

1039Middlesex County, VAVA10,84166–

1040Bourbon County, KYKY20,24366–

1041Gallia County, OHOH29,07266–

1042Effingham County, ILIL34,51966–

1043Benton County, WAWA221,72266–

1044Hardin County, OHOH30,07266–

1045Assumption Parish, LALA19,72066–

1046Toombs County, GAGA27,54566–

1047McDowell County, WVWV16,87866–

1048Greene County, VAVA21,95866–

1049San Luis Obispo County, CACA282,36766–

1050Gibson County, ININ33,09165–

1051Shelby County, KYKY51,24365–

1052Powell County, KYKY12,81265–

1053Vermillion County, ININ15,48865–

1054Dodge County, NENE38,05765–

1055Mitchell County, NCNC15,06265–

1056McLeod County, MNMN36,63165–

1057Grand Isle County, VTVT7,51165–

1058Ben Hill County, GAGA17,09965–

1059Walker County, TXTX83,84265–

1060Ottawa County, OKOK30,43865–

1061Jefferson County, ILIL36,14765–

1062Tom Green County, TXTX120,60265–

1063Simpson County, KYKY20,78865–

1064Tulare County, CACA485,14665–

1065Highland County, OHOH43,82365–

1066Washington Parish, LALA44,93764–

1067Upshur County, WVWV23,75864–

1068Kent County, MDMD19,56564–

1069Cattaraugus County, NYNY75,39064–

1070Bedford County, TNTN55,27364–

1071Creek County, OKOK74,96764–

1072Daviess County, ININ34,20964–

1073Morgan County, ILIL32,51564–

1074Harrison County, TXTX71,95664–

1075Bulloch County, GAGA86,94964–

1076Hertford County, NCNC19,01564–

1077Mississippi County, ARAR37,82864–

1078Franklin County, GAGA25,94864–

1079Decatur County, ININ26,57663–

1080Posey County, ININ24,98863–

1081Franklin County, VTVT51,17763–

1082Marion County, MOMO28,52563–

1083Dakota County, NENE21,68763–

1084Warren County, IAIA57,33163–

1085Putnam County, ININ37,87663–

1086Orange County, VAVA40,08363–

1087Leflore County, MSMS25,68663–

1088Jennings County, ININ27,62263–

1089Coshocton County, OHOH37,18863–

1090Franklin County, TNTN45,57963–

1091Sumter County, GAGA28,80163–

1092Nicollet County, MNMN34,27363–

1093Buchanan County, VAVA18,49262–

1094Shenandoah County, VAVA45,83962–

1095Massac County, ILIL13,50262–

1096Pickens County, GAGA37,16762–

1097Henry County, ILIL48,09562–

1098Lane County, OROR381,58462–

1099Woodford County, ILIL38,11162–

1100Tipton County, ININ15,31962–

1101Baldwin County, ALAL267,76162–

1102Chambers County, ALAL34,25362–

1103Harrison County, ININ40,43762–

1104Ohio County, ININ5,99462–

1105Northampton County, VAVA11,87962–

1106Waupaca County, WIWI51,46162–

1107Miller County, ARAR42,35762–

1108Lamar County, MSMS67,40361–

1109Union County, TNTN21,45061–

1110Marlboro County, SCSC25,48861–

1111Dunklin County, MOMO26,85561–

1112Coryell County, TXTX85,59261–

1113Grant County, KYKY26,18161–

1114Grainger County, TNTN25,73961–

1115Blount County, ALAL60,15661–

1116Graves County, KYKY37,05061–

1117Polk County, NCNC20,53361–

1118Whatcom County, WAWA236,39261–

1119Hocking County, OHOH27,51261–

1120Ogle County, ILIL51,39961–

1121Russell County, VAVA25,33261–

1122Otsego County, NYNY60,58960–

1123Montgomery County, KSKS30,17760–

1124Crawford County, KSKS39,00860–

1125Amherst County, VAVA31,96260–

1126Cache County, UTUT145,00060–

1127Lincoln County, KYKY25,35360–

1128Claiborne County, TNTN33,22960–

1129Avery County, NCNC18,11060–

1130Randolph County, ILIL29,92160–

1131Bedford County, VAVA83,05960–

1132Randolph County, ININ24,43860–

1133Kershaw County, SCSC73,16660–

1134Brunswick County, NCNC174,70260–

1135McDonough County, ILIL25,91660–

1136St. Martin Parish, LALA51,10660–

1137Isanti County, MNMN44,38659–

1138Carter County, KYKY26,14959–

1139Dare County, NCNC38,24559–

1140Bannock County, IDID91,59159–

1141Coffee County, ALAL56,95359–

1142Titus County, TXTX31,56359–

1143Union County, SCSC26,79959–

1144Flagler County, FLFL140,36059–

1145Powhatan County, VAVA32,59159–

1146Cook County, GAGA18,23259–

1147Columbia County, WIWI58,13259–

1148Wabash County, ILIL10,90759–

1149Hoke County, NCNC56,93959–

1150Mason County, WVWV24,70758–

1151Cass County, NDND201,79458–

1152Obion County, TNTN30,06758–

1153Monroe County, ILIL34,84058–

1154Russell County, KYKY18,60858–

1155Wyoming County, WVWV19,80158–

1156Christian County, MOMO96,72558–

1157Pleasants County, WVWV7,33858–

1158Chenango County, NYNY45,71558–

1159Nacogdoches County, TXTX66,03558–

1160Estill County, KYKY13,96258–

1161San Juan County, WAWA18,57758–

1162Greene County, NCNC20,70058–

1163Autauga County, ALAL61,92058–

1164Harvey County, KSKS33,58057–

1165Pittsylvania County, VAVA59,49057–

1166Marshall County, TNTN38,07157–

1167Franklin County, VAVA55,52657–

1168Coahoma County, MSMS19,84957–

1169Lawrence County, TNTN46,91457–

1170Pierce County, WIWI43,51957–

1171Madison County, NENE36,10657–

1172Columbia County, OROR54,09157–

1173Georgetown County, SCSC65,91257–

1174Chatham County, NCNC85,11157–

1175Schuyler County, NYNY16,92457–

1176Sumter County, FLFL157,77257–

1177Pope County, ARAR64,97657–

1178Augusta County, VAVA78,94057–

1179Sauk County, WIWI66,65256–

1180Kootenai County, IDID191,86456–

1181Webster County, IAIA36,83856–

1182Baxter County, ARAR42,98256–

1183Lee County, VAVA21,64256–

1184Prentiss County, MSMS25,28456–

1185Greene County, ININ31,16556–

1186Jay County, ININ20,11856–

1187Carroll County, VAVA29,29956–

1188Dorchester County, MDMD33,62856–

1189Jackson County, WVWV27,45056–

1190Butler County, MOMO41,90456–

1191Windsor County, VTVT57,31256–

1192Jersey County, ILIL21,16056–

1193Chester County, SCSC33,00155–

1194Macoupin County, ILIL43,74855–

1195Ripley County, ININ29,43455–

1196Wythe County, VAVA27,98355–

1197Kewaunee County, WIWI20,75855–

1198Weakley County, TNTN33,26155–

1199Greene County, ARAR47,41155–

1200Pike County, OHOH27,06155–

1201Wayne County, PAPA51,70355–

1202Iosco County, MIMI25,26655–

1203Northumberland County, VAVA12,55755–

1204Martin County, NCNC21,60155–

1205Gallatin County, KYKY8,84055–

1206Wyandot County, OHOH21,56755–

1207Jackson County, NCNC45,03955–

1208Martin County, KYKY10,69755–

1209Tallapoosa County, ALAL40,95354–

1210Marion County, IAIA34,19254–

1211White County, GAGA29,80254–

1212Elbert County, GAGA20,07254–

1213Upshur County, TXTX44,41054–

1214Wetzel County, WVWV13,73454–

1215Goodhue County, MNMN48,19554–

1216Effingham County, GAGA74,39754–

1217Garfield County, OKOK61,77954–

1218Emmet County, MIMI33,77554–

1219Alpena County, MIMI28,85354–

1220Meigs County, OHOH21,58753–

1221Columbia County, FLFL74,09453–

1222Green Lake County, WIWI19,30553–

1223White County, TNTN29,61253–

1224Dickenson County, VAVA13,23653–

1225Door County, WIWI30,61653–

1226Bennington County, VTVT36,63053–

1227Union County, MSMS28,45953–

1228Bradford County, PAPA59,60053–

1229Harrison County, KYKY19,62753–

1230Tate County, MSMS28,72553–

1231Morgan County, WVWV18,02753–

1232Windham County, VTVT45,20453–

1233White County, ARAR80,08553–

1234Columbus County, NCNC50,48753–

1235Juniata County, PAPA23,40353–

1236Jones County, GAGA29,17153–

1237Newberry County, SCSC39,56153–

1238Jackson County, OROR221,79553–

1239Adams County, NENE31,07153–

1240Mower County, MNMN40,97153–

1241Phelps County, MOMO45,24752–

1242Currituck County, NCNC33,15852–

1243Bremer County, IAIA25,29652–

1244Morris County, TXTX12,13352–

1245Okmulgee County, OKOK37,24152–

1246Kay County, OKOK43,49052–

1247Carter County, OKOK48,91052–

1248Ashe County, NCNC27,51452–

1249Green County, WIWI37,22752–

1250Pettis County, MOMO44,25452–

1251Chippewa County, WIWI67,61452–

1252Le Sueur County, MNMN29,45352–

1253Macon County, TNTN27,66352–

1254Santa Fe County, NMNM156,90752–

1255Trousdale County, TNTN12,62352–

1256Lincoln County, MSMS35,01252–

1257Mason County, MIMI29,04052–

1258Charlevoix County, MIMI26,03652–

1259Pueblo County, COCO169,27752–

1260Lumpkin County, GAGA36,17852–

1261Clay County, MSMS18,23852–

1262Boone County, WVWV20,25151–

1263Pike County, PAPA62,80851–

1264Johnson County, MOMO56,67051–

1265Schoharie County, NYNY30,17651–

1266Fulton County, ININ20,09151–

1267Grenada County, MSMS20,86851–

1268Cumberland County, TNTN66,30051–

1269Warren County, PAPA37,03851–

1270Knott County, KYKY13,32151–

1271Franklin County, ININ23,28651–

1272Mayes County, OKOK40,41651–

1273Lonoke County, ARAR76,66451–

1274Beaufort County, NCNC44,67051–

1275Dallas County, IAIA118,45751–

1276Camp County, TXTX13,38051–

1277Carroll County, ININ20,65551–

1278Amador County, CACA41,87651–

1279Huntingdon County, PAPA43,00150–

1280Randolph County, MOMO24,51350–

1281Madison County, IDID55,17250–

1282Crockett County, TNTN14,00650–

1283Lafayette County, MSMS59,59750–

1284Garrard County, KYKY18,20750–

1285Evangeline Parish, LALA31,98050–

1286Sequoyah County, OKOK40,84250–

1287Goochland County, VAVA29,18750–

1288Iberville Parish, LALA29,57950–

1289Perry County, ININ19,38950–

1290Sampson County, NCNC61,50450–

1291Coffee County, GAGA44,40750–

1292Marion County, TNTN29,80450–

1293Logan County, ILIL27,18250–

1294Lauderdale County, TNTN24,61750–

1295New Kent County, VAVA28,02250–

1296Reno County, KSKS61,53950–

1297Henry County, TNTN32,89650–

1298Laurens County, GAGA51,04150–

1299Lafayette County, MOMO33,53150–

1300Prince Edward County, VAVA22,39149–

1301Lawrence County, MOMO39,40149–

1302Lincoln County, TNTN36,85349–

1303Yancey County, NCNC19,08449–

1304Grand Forks County, NDND74,50149–

1305Paulding County, OHOH18,72749–

1306Dallas County, ALAL35,14049–

1307Spencer County, ININ20,06149–

1308Duplin County, NCNC51,57149–

1309Susquehanna County, PAPA38,23749–

1310Allegany County, NYNY46,80049–

1311Lincoln County, WVWV19,17749–

1312Scotts Bluff County, NENE35,58649–

1313Caswell County, NCNC22,56349–

1314Kandiyohi County, MNMN44,72049–

1315Stephens County, OKOK44,31049–

1316Abbeville County, SCSC24,83649–

1317Christian County, ILIL33,44349–

1318Caldwell County, TXTX55,15048–

1319Perry County, ILIL20,16048–

1320Lamar County, TXTX51,50348–

1321Bleckley County, GAGA12,86648–

1322Union County, KYKY12,83948–

1323Chesterfield County, SCSC44,74048–

1324Clay County, MNMN67,73448–

1325McKean County, PAPA38,98448–

1326Monroe County, TNTN49,73048–

1327Marion County, KYKY20,11548–

1328Boone County, ARAR38,62848–

1329Camden County, GAGA60,14348–

1330Monroe County, MSMS33,31848–

1331Bolivar County, MSMS28,26248–

1332Pearl River County, MSMS59,36348–

1333Evans County, GAGA11,02848–

1334Nottoway County, VAVA15,79648–

1335Jasper County, IAIA38,15348–

1336Leelanau County, MIMI22,98248–

1337Montgomery County, NCNC26,40347–

1338Lee County, ILIL32,91447–

1339Pontotoc County, OKOK38,52847–

1340Bedford County, PAPA47,48047–

1341Rusk County, TXTX54,85447–

1342Pike County, GAGA20,93247–

1343Silver Bow County, MTMT36,11847–

1344Barron County, WIWI46,48447–

1345DeKalb County, TNTN21,87347–

1346Jefferson Davis Parish, LALA31,47147–

1347Sunflower County, MSMS22,89347–

1348Marion County, MSMS24,00147–

1349Avoyelles Parish, LALA37,94147–

1350Clarendon County, SCSC31,04347–

1351Chilton County, ALAL47,70847–

1352Mecklenburg County, VAVA30,74747–

1353Rockcastle County, KYKY16,14847–

1354Freeborn County, MNMN30,44047–

1355Douglas County, ILIL19,88047–

1356Vernon Parish, LALA45,09147–

1357Wexford County, MIMI34,44547–

1358Herkimer County, NYNY59,21947–

1359Hardin County, TXTX58,72346–

1360Clinton County, KYKY9,13946–

1361Clay County, KYKY19,46546–

1362Orange County, ININ19,83446–

1363Botetourt County, VAVA34,14446–

1364Washington County, ININ28,38346–

1365Johnson County, TNTN18,71846–

1366Lincoln County, MOMO66,67646–

1367White County, ININ25,16446–

1368Carroll County, TNTN29,20046–

1369Barbour County, WVWV15,41446–

1370Skagit County, WAWA132,97546–

1371Richland County, ILIL15,21946–

1372Giles County, VAVA16,56446–

1373Lee County, GAGA34,17946–

1374Lawrence County, ALAL33,84346–

1375Macon County, NCNC39,23246–

1376Warren County, MOMO39,01646–

1377Waller County, TXTX69,85846–

1378Newaygo County, MIMI51,62246–

1379Wood County, TXTX49,68846–

1380Liberty County, TXTX121,36446–

1381Cherokee County, OKOK49,19645–

1382Waldo County, MEME40,69345–

1383Anderson County, TXTX59,80545–

1384Alexander County, ILIL4,57045–

1385Brown County, ININ15,77745–

1386Jackson County, FLFL49,62945–

1387Van Zandt County, TXTX66,13045–

1388Douglas County, MNMN40,12045–

1389Fountain County, ININ17,01345–

1390Smith County, TNTN20,98145–

1391Union County, ARAR36,92645–

1392Lee County, SCSC15,73045–

1393St. Francis County, ARAR21,80045–

1394Chester County, TNTN17,99445–

1395Owen County, ININ21,88645–

1396Henry County, KYKY16,44745–

1397Preston County, WVWV34,00445–

1398Meriwether County, GAGA21,51645–

1399Larue County, KYKY15,18445–

1400Dawson County, GAGA35,36545–

1401Pontotoc County, MSMS32,09645–

1402Grady County, GAGA26,59045–

1403Jasper County, ININ33,89445–

1404Lewis County, WVWV16,39445–

1405Pemiscot County, MOMO14,46545–

1406Rush County, ININ16,76744–

1407Jackson County, ALAL54,28144–

1408Crow Wing County, MNMN69,13244–

1409Banks County, GAGA21,27344–

1410Cherokee County, NCNC30,83044–

1411Henry County, IAIA19,34944–

1412Logan County, KYKY28,66944–

1413Clare County, MIMI31,54344–

1414Platte County, NENE35,64944–

1415Anson County, NCNC21,75844–

1416Brown County, MNMN25,51744–

1417Boone County, IAIA26,79944–

1418Fulton County, ILIL32,90144–

1419Yakima County, WAWA259,18544–

1420Franklin County, ALAL32,44944–

1421Crawford County, ILIL18,64844–

1422Grafton County, NHNH93,22544–

1423Panola County, MSMS32,69144–

1424Montgomery County, ILIL28,07644–

1425Gladwin County, MIMI26,07744–

1426Jim Wells County, TXTX38,80444–

1427Neshoba County, MSMS28,73243–

1428Adams County, OHOH27,86543–

1429Pendleton County, KYKY14,80043–

1430Garrett County, MDMD28,37043–

1431Adair County, MOMO25,68443–

1432Scott County, VAVA21,20043–

1433Fluvanna County, VAVA28,97543–

1434Washington County, TXTX38,28843–

1435Union County, ININ6,86343–

1436Monroe County, GAGA32,02343–

1437Penobscot County, MEME157,96743–

1438Bastrop County, TXTX118,90843–

1439Yellowstone County, MTMT172,69243–

1440Lake County, TNTN6,24943–

1441Addison County, VTVT38,04843–

1442Marshall County, MSMS34,65443–

1443Bamberg County, SCSC12,79643–

1444Grant County, WIWI52,44643–

1445Lawrence County, ILIL13,79043–

1446Caledonia County, VTVT30,41443–

1447Lamoille County, VTVT26,29443–

1448Decatur County, GAGA29,43243–

1449Vermilion Parish, LALA57,67143–

1450Waseca County, MNMN18,68843–

1451Tippah County, MSMS21,38943–

1452Union County, ILIL16,65643–

1453Washington County, NENE21,30243–

1454Allen County, KYKY22,53643–

1455Sullivan County, ININ20,83142–

1456Hot Spring County, ARAR33,45142–

1457Valencia County, NMNM82,01342–

1458Magoffin County, KYKY11,11042–

1459East Feliciana Parish, LALA18,91142–

1460Perquimans County, NCNC13,49042–

1461Dunn County, WIWI46,22342–

1462Elk County, PAPA29,92642–

1463Grayson County, KYKY27,40642–

1464Giles County, TNTN31,43342–

1465Union County, FLFL16,25042–

1466Webster County, KYKY12,92942–

1467Henderson County, TNTN28,51842–

1468Camden County, MOMO44,04742–

1469Hancock County, KYKY9,05042–

1470Huron County, MIMI30,53042–

1471Clinton County, PAPA37,87042–

1472St. Lawrence County, NYNY105,48842–

1473Phillips County, ARAR14,25542–

1474Oceana County, MIMI27,17742–

1475Ouachita County, ARAR21,73142–

1476Tishomingo County, MSMS18,63942–

1477Shawano County, WIWI41,56042–

1478Dinwiddie County, VAVA28,89642–

1479De Witt County, ILIL15,11842–

1480Sanilac County, MIMI40,08341–

1481Moultrie County, ILIL14,37141–

1482Nicholas County, WVWV23,84841–

1483Fannin County, GAGA26,11141–

1484Madera County, CACA167,92741–

1485Trimble County, KYKY8,70141–

1486Meigs County, TNTN14,18641–

1487Geneva County, ALAL27,55441–

1488Stone County, MOMO32,50341–

1489Arenac County, MIMI15,06841–

1490Bureau County, ILIL32,51041–

1491Pike County, ALAL33,68841–

1492Louisa County, VAVA42,92441–

1493Putnam County, GAGA23,72241–

1494Lyon County, KSKS32,26641–

1495Macon County, ALAL18,13241–

1496Independence County, ARAR38,78541–

1497Alleghany County, NCNC11,47941–

1498Miami County, KSKS36,24041–

1499Overton County, TNTN23,78741–

1500Monroe County, WIWI46,57241–

SHOWING 1,001–1,500 OF 3,122

1 2 3 4 5 6 7

Download CSV (full list, 3,122 rows)

UPDATED 2026-09-11 · DATA: US CENSUS BUREAU DECENNIAL CENSUS