Massac County, Illinois

Massac County: County in Illinois, United States


Massac County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 15,429 and a population density of 25 people per km². After 10 years in 2020 county had an estimated population of 13,636 inhabitants. Its county seat is Metropolis. The county was created 180 years ago in 1843.

Quick Facts about Massac County

Population : 13,636 (2020)
Country : United States of America
State : Illinois (United States)
Area : 627 km2
Water as percent of area : 1.9%
Land as percent of area : 98.1%
Named for : Fort Massac
Altitude : 413 feet / 126 meters
Capital : Metropolis
Establishment : February 02, 1843
Time Zone : America/Chicago
Local time : 05:34:54 (8th February 2023)
Density : 22 Pop. per km² as of 2020
Population growth : -13.15% (2010-2020)
Massac County locator map
Location of Massac County on Illinois map.
Curtis House Metropolis IL image
Curtis House Metropolis IL
Curtis House Metropolis IL image


Massac County is located at 37°13'9"N 88°42'28"W (37.2190300, -88.7077400). It has 5 neighbors: Johnson County, Pope County, Pulaski County, Livingston County and McCracken County.

Massac County map

The largest city of Massac County is Metropolis with a population of 5,885. Other cities include, Brookport population 815 and Joppa population 298. See all Massac County cities & populated places.

Massac County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Massac County.

City Name Population Title
Metropolis 5,885 Very large and significant city or urban area usually with millions of inhabitants
Brookport 815 City in Massac County, Illinois, United States
Joppa 298 Human settlement in Illinois, United States of America

Massac County has 5 neighbours.


According to census records, the population of Massac County decreased by 13.15% in 10 years.

Year Population % Change Method
2010 15,429 - census
2011 15,281 -0.97% estimation process
2012 15,066 -1.43% estimation process
2013 14,847 -1.48% estimation process
2014 14,756 -0.62% estimation process
2015 14,567 -1.3% estimation process
2016 14,440 -0.88% estimation process
2017 14,291 -1.04% estimation process
2018 14,023 -1.91% estimation process
2019 13,772 -1.82% estimation process
2020 13,636 -1% estimation process

Comitatul Massac, Comte de Massac, Comté de Massac, Condado de Massac, Condado han Massac, Contea di Massac, Hrabstwo Massac, Masak, Massac, Massac Comitatus, Massac Kun, Massac Kūn, Massac konderria, Massac megye, Massak, Massak srjan, Okrug Masak, Quan Massac, Quận Massac, ma sa ke xian, masaka ka'unti, masakku jun, mqatʿt masak, shhrstan masak aylynwy, Масак, Массак, Округ Масак, Մասսակ շրջան, شهرستان ماساک، ایلینوی, ماساک کاؤنٹی، الینوائے, مساک کاؤنٹی, مقاطعة ماساك, মাসাক কাউন্টি, マサック郡, 马萨克县

People born in Massac County (1)

American judge Alonzo K. Vickers was born in Massac County

Illinois Other Counties (more counties)

County Name Population Title
Cook County 5,108,284 County in Illinois, United States
Chicago 2,677,643 City and county seat of Cook County, Illinois, United States
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
Markham 328,966 City in Cook County, Illinois, 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 City in Kane County, Illinois, United States
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