Fayette County, Illinois

Fayette County: county in Illinois, United States.

About

Fayette County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 22,140 and a population density of 12 people per km². After 10 years in 2020 county had an estimated population of 21,264 inhabitants. Its county seat is Vandalia. The county was created 205 years ago in 1820.

Fayette County locator map
Location of Fayette County on Illinois map.

County Snapshot

Fayette County at a glance

Fayette County currently has 1 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

1

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Top linked places

Quick Facts about Fayette County

Population 21,264 (2020)
Country United States of America
State Illinois (United States)
Different from Fayette County, Fayette County, Fayette County, Fayette County, Fayette County, Fayette County, Fayette County, Fayette County, Fayette County, Fayette County
Area 1879 km2
Water as percent of area 1.2%
Land as percent of area 98.8%
Latitude & Longitude 39.0002,-89.0241
Named for Gilbert du Motier, Marquis de Lafayette
Capital Vandalia
Establishment January 01, 1821
Time Zone America/Chicago
Local time 07:45:15 (23rd September 2026)
Density 11 Pop. per km² as of 2020
Population growth -3.96% (2010-2020)
Weather 73℉ Mostly Sunny 7-days weather
Fayette County Courthouse  Vandalia image
Fayette County Courthouse Vandalia image

Geography

Fayette County is located at 39°0'1"N 89°1'27"W (39.0001900, -89.0241400). It has 6 neighbors: Bond County, Clay County, Clinton County, Marion County, Montgomery County and Shelby County.

Fayette County map

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Fayette County Populated Places

Cities, towns, neighborhoods & other populated places in Fayette County.

City Name Population Title
Vandalia 6,662 Township in Fayette County, Illinois

Weather

73°F
Mostly Sunny
6 to 9 mph N Wednesday

Mostly sunny, with a high near 73.

7-Day Forecast

Official website of Fayette County

Official Website

Demographics

According to census records, the population of Fayette County decreased by 3.96% in 10 years.

Year Population % Change Method
2010 22,140 - census
2011 22,378 1.07% estimation process
2012 22,163 -0.96% estimation process
2013 22,195 0.14% estimation process
2014 22,076 -0.54% estimation process
2015 22,036 -0.18% estimation process
2016 21,570 -2.11% estimation process
2017 21,514 -0.26% estimation process
2018 21,368 -0.68% estimation process
2019 21,336 -0.15% estimation process
2020 21,264 -0.34% estimation process
Comitatul Fayette, Comte de Fayette, Comté de Fayette, Condado de Fayette, Condado han Fayette, Contea di Fayette, Faett, Fajet, Fayet srjan, Fayette, Fayette Comitatus, Fayette Kun, Fayette Kūn, Fayette konderria, Fayette megye, Fejett, Hrabstwo Fayette, Okrug Fejet, Quan Fayette, Quận Fayette, faietto jun, fei ye te xian, mqatʿt fayyt, phayeta ka'unti, shhrstan fayty aylynwy, Округ Фејет, Файет, Фаєтт, Фейетт, Ֆայետ շրջան, شهرستان فایتی، ایلینوی, فائیٹ کاؤنٹی، الینوائے, فایٹ کاؤنٹی، الینوۓ, مقاطعة فاييت, ফায়েত কাউন্টি, ファイエット郡, 費耶特縣

People born in Fayette County (1)

American politician William H. Rowe was born in Fayette County

Other places with the same name (10)

Illinois Other Counties (more counties)

County Name Population Title
Cook County 5,108,284 County in Illinois, United States
Chicago 2,677,643 The third most populous city in the United States and the center of the Chicago metropolitan area.
DuPage County 917,481 County in Illinois, United States
Lake County 693,593 County in Oregon, United States
Will County 688,726 County in Illinois, United States
Kane County 531,010 County in southern Utah, United States
McHenry County 305,888 County in Illinois, United States
Winnebago County 281,295 County in Illinois, United States
Madison County 262,635 County in Montana, United States
Saint Clair County 258,046 The County of St.
Champaign County 209,192 County in Illinois, United States
Aurora 196,383 The second most populous city in Illinois.
Sangamon County 193,882 County in Illinois, United States
Peoria County 177,652 County in Illinois, United States of America
McLean County 171,256 County in North Dakota, United States
Naperville 147,986 The second most populous city in Illinois.