Johnson County, Illinois demographics
Population: 13,238
Median age: 43.4
Median household income: 58,502
Demographics, population, home values, social and economic characteristics of Johnson County, Illinois.
Population
| 2021 | 13,238 |
| 2020 | 12,391 |
| 2019 | 12,494 |
| 2018 | 12,602 |
| 2017 | 12,899 |
| 2016 | 12,866 |
| 2015 | 12,829 |
| 2014 | 12,650 |
| 2013 | 12,665 |
| 2012 | 12,653 |
| 2011 | 12,666 |
| 2010 | 12,710 |
| 2009 | 13,653 |
Johnson County, IL cities
Belknap village - 163
Buncombe village - 308
Cypress village - 215
Goreville village - 1,125
Marion city - 16,960
New Burnside village - 166
Simpson village - 61
Vienna city - 1,729
Census data for Johnson County, Illinois
Demographic and housing estimates in Johnson County, Illinois
| Total population | 13,238 |
| Male | 7,259 |
| Female | 5,979 |
| Total population | 13,238 |
| Under 5 years | 598 |
| 5 to 9 years | 792 |
| 10 to 14 years | 707 |
| 15 to 19 years | 708 |
| 20 to 24 years | 772 |
| 25 to 34 years | 1,659 |
| 35 to 44 years | 1,626 |
| 45 to 54 years | 1,702 |
| 55 to 59 years | 995 |
| 60 to 64 years | 885 |
| 65 to 74 years | 1,606 |
| 75 to 84 years | 791 |
| 85 years and over | 397 |
| Median age (years) | 43.4 |
| Under 18 years | 2,548 |
| 16 years and over | 11,018 |
| 18 years and over | 10,690 |
| 21 years and over | 10,252 |
| 62 years and over | 3,302 |
| 65 years and over | 2,794 |
| Total population | 13,238 |
| One race | 13,023 |
| White | 11,640 |
| Black or African American | 1,205 |
| American Indian and Alaska Native | 0 |
| Asian | 38 |
| Native Hawaiian and Other Pacific Islander | 0 |
| Some other race | 140 |
| Two or more races | 215 |
| Citizen, VOTING AGE 18 and over population | 10,595 |
| Male Citizen, VOTING AGE 18 and over population | 5,948 |
| Female Citizen, VOTING AGE 18 and over population | 4,647 |
Social characteristics in Johnson County, Illinois
| Total households | 4,055 |
| Family households (families) | 2,289 |
| Married-couple family | 263 |
| Male householder, no wife present, family | 509 |
| Female householder, no husband present, family | 438 |
| Nonfamily households | 994 |
| Average household size | 1,820 |
| Average family size | 2.72 |
Economic characteristics in Johnson County, Illinois
| Total households | 4,055 |
| Less than $10,000 | 231 |
| $10,000 to $14,999 | 193 |
| $15,000 to $24,999 | 323 |
| $25,000 to $34,999 | 468 |
| $35,000 to $49,999 | 515 |
| $50,000 to $74,999 | 811 |
| $75,000 to $99,999 | 526 |
| $100,000 to $149,999 | 706 |
| $150,000 to $199,999 | 143 |
| $200,000 or more | 139 |
| Median household income (dollars) | 58,502 |
Housing characteristics in Johnson County, Illinois
| Total housing units | 5,534 |
| Occupied housing units | 4,055 |
| Vacant housing units | 1,479 |
| Total housing units | 5,534 |
| 1-unit, detached | 3,954 |
| 1-unit, attached | 38 |
| 2 units | 67 |
| 3 or 4 units | 86 |
| 5 to 9 units | 76 |
| 10 to 19 units | 17 |
| 20 or more units | 58 |
| Mobile home | 1,236 |
| Boat, RV, van, etc. | 2 |
| Total housing units | 5,534 |
| Built 2014 or later | 12 |
| Built 2010 to 2013 | 351 |
| Built 2000 to 2009 | 942 |
| Built 1990 to 1999 | 945 |
| Built 1980 to 1989 | 669 |
| Built 1970 to 1979 | 1,110 |
| Built 1960 to 1969 | 490 |
| Built 1950 to 1959 | 322 |
| Built 1940 to 1949 | 325 |
| Built 1939 or earlier | 368 |
| Total housing units | 5,534 |
| 1 room | 83 |
| 2 rooms | 76 |
| 3 rooms | 206 |
| 4 rooms | 730 |
| 5 rooms | 1,596 |
| 6 rooms | 1,447 |
| 7 rooms | 646 |
| 8 rooms | 341 |
| 9 rooms or more | 409 |
| Median rooms | 5.6 |
| Total housing units | 5,534 |
| No bedroom | 86 |
| 1 bedroom | 283 |
| 2 bedrooms | 1,055 |
| 3 bedrooms | 3,439 |
| 4 bedrooms | 581 |
| 5 or more bedrooms | 90 |
| Occupied housing units | 4,055 |
| Owner-occupied | 3,458 |
| Renter-occupied | 597 |
| Average household size of owner-occupied unit | 2.75 |
| Average household size of renter-occupied unit | 2.53 |
| Occupied housing units | 4,055 |
| Moved in 2017 or later | 222 |
| Moved in 2015 to 2016 | 728 |
| Moved in 2010 to 2014 | 697 |
| Moved in 2000 to 2009 | 1,114 |
| Moved in 1990 to 1999 | 596 |
| Moved in 1989 and earlier | 698 |
| Owner-occupied units | 3,458 |
| Less than $50,000 | 650 |
| $50,000 to $99,999 | 811 |
| $100,000 to $149,999 | 587 |
| $150,000 to $199,999 | 530 |
| $200,000 to $299,999 | 572 |
| $300,000 to $499,999 | 273 |
| $500,000 to $999,999 | 24 |
| $1,000,000 or more | 11 |
| Median (dollars) | 122,300 |
| Owner-occupied units | 3,458 |
| Housing units with a mortgage | 1,451 |
| Housing units without a mortgage | 2,007 |
| Occupied units paying rent | 501 |
| Less than $500 | 109 |
| $500 to $999 | 303 |
| $1,000 to $1,499 | 68 |
| $1,500 to $1,999 | 11 |
| $2,000 to $2,499 | 3 |
| $2,500 to $2,999 | 0 |
| $3,000 or more | 7 |
| Median (dollars) | 635 |
| No rent paid | 96 |
Demographic data for Johnson County, IL and each city in the county. Lists of cities by population, wealth and poverty in Johnson County, IL.
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