102 Counties — illinois

CountyTypePopulationLand area
adamsCounty68,277857 sq mi
alexanderCounty9,590236 sq mi
bondCounty17,633380 sq mi
booneCounty41,786281 sq mi
brownCounty6,950306 sq mi
bureauCounty35,503869 sq mi
calhounCounty5,084254 sq mi
carrollCounty16,674444 sq mi
cassCounty13,695376 sq mi
champaignCounty179,669997 sq mi
christianCounty35,372709 sq mi
clarkCounty17,008502 sq mi
clayCounty14,560469 sq mi
clintonCounty35,535474 sq mi
colesCounty53,196508 sq mi
cookCounty5,376,741946 sq mi
crawfordCounty20,452444 sq mi
cumberlandCounty11,253346 sq mi
dekalbCounty88,969634 sq mi
de wittCounty16,798398 sq mi
douglasCounty19,922417 sq mi
dupageCounty904,161334 sq mi
edgarCounty19,704624 sq mi
edwardsCounty6,971222 sq mi
effinghamCounty34,264479 sq mi
fayetteCounty21,802717 sq mi
fordCounty14,241486 sq mi
franklinCounty39,018412 sq mi
fultonCounty38,250866 sq mi
gallatinCounty6,445324 sq mi
greeneCounty14,761543 sq mi
grundyCounty37,535420 sq mi
hamiltonCounty8,621435 sq mi
hancockCounty20,121795 sq mi
hardinCounty4,800178 sq mi
hendersonCounty8,213379 sq mi
henryCounty51,020823 sq mi
iroquoisCounty31,3341,117 sq mi
jacksonCounty59,612588 sq mi
jasperCounty10,117494 sq mi
jeffersonCounty40,045571 sq mi
jerseyCounty21,668369 sq mi
jo daviessCounty22,289601 sq mi
johnsonCounty12,878346 sq mi
kaneCounty404,119521 sq mi
kankakeeCounty103,833678 sq mi
kendallCounty54,544321 sq mi
knoxCounty55,836716 sq mi
lakeCounty644,356448 sq mi
lasalleCounty111,5091,135 sq mi
lawrenceCounty15,452372 sq mi
leeCounty36,062725 sq mi
livingstonCounty39,6781,044 sq mi
loganCounty31,183618 sq mi
maconCounty114,706581 sq mi
macoupinCounty49,019864 sq mi
madisonCounty258,941725 sq mi
marionCounty41,691572 sq mi
marshallCounty13,180386 sq mi
masonCounty16,038539 sq mi
massacCounty15,161239 sq mi
mcdonoughCounty32,913589 sq mi
mchenryCounty260,077604 sq mi
mcleanCounty150,4331,184 sq mi
menardCounty12,486314 sq mi
mercerCounty16,957561 sq mi
monroeCounty27,619388 sq mi
montgomeryCounty30,652704 sq mi
morganCounty36,616569 sq mi
moultrieCounty14,287336 sq mi
ogleCounty51,032759 sq mi
peoriaCounty183,433620 sq mi
perryCounty23,094441 sq mi
piattCounty16,365440 sq mi
pikeCounty17,384830 sq mi
popeCounty4,413371 sq mi
pulaskiCounty7,348201 sq mi
putnamCounty6,086160 sq mi
randolphCounty33,893578 sq mi
richlandCounty16,149360 sq mi
rock islandCounty149,374427 sq mi
salineCounty26,733383 sq mi
sangamonCounty188,951868 sq mi
schuylerCounty7,189437 sq mi
scottCounty5,537251 sq mi
shelbyCounty22,893759 sq mi
starkCounty6,332288 sq mi
st. clairCounty256,082664 sq mi
stephensonCounty48,979564 sq mi
tazewellCounty128,485649 sq mi
unionCounty18,293416 sq mi
vermilionCounty83,919899 sq mi
wabashCounty12,937224 sq mi
warrenCounty18,735543 sq mi
washingtonCounty15,148563 sq mi
wayneCounty17,151714 sq mi
whiteCounty15,371495 sq mi
whitesideCounty60,653685 sq mi
willCounty502,266837 sq mi
williamsonCounty61,296424 sq mi
winnebagoCounty278,418514 sq mi
woodfordCounty35,469528 sq mi