Piatt County, Illinois demographics
Population: 16,664
Median age: 41.9
Median household income: 77,559
Demographics, population, home values, social and economic characteristics of Piatt County, Illinois.
Population
| 2021 | 16,664 |
| 2020 | 16,412 |
| 2019 | 16,401 |
| 2018 | 16,427 |
| 2017 | 16,433 |
| 2016 | 16,469 |
| 2015 | 16,495 |
| 2014 | 16,552 |
| 2013 | 16,620 |
| 2012 | 16,679 |
| 2011 | 16,710 |
| 2010 | 16,708 |
| 2009 | 16,499 |
Piatt County, IL cities
Atwood village - 1,085
Bement village - 1,548
Cerro Gordo village - 1,370
Cisco village - 293
De Land village - 469
Hammond village - 531
Ivesdale village - 241
LaPlace CDP - 199
Mansfield village - 967
Monticello city - 6,202
White Heath CDP - 185
Census data for Piatt County, Illinois
Demographic and housing estimates in Piatt County, Illinois
| Total population | 16,664 |
| Male | 8,222 |
| Female | 8,442 |
| Total population | 16,664 |
| Under 5 years | 932 |
| 5 to 9 years | 1,167 |
| 10 to 14 years | 926 |
| 15 to 19 years | 1,041 |
| 20 to 24 years | 854 |
| 25 to 34 years | 1,793 |
| 35 to 44 years | 2,109 |
| 45 to 54 years | 2,019 |
| 55 to 59 years | 1,291 |
| 60 to 64 years | 1,282 |
| 65 to 74 years | 1,925 |
| 75 to 84 years | 883 |
| 85 years and over | 442 |
| Median age (years) | 41.9 |
| Under 18 years | 3,738 |
| 16 years and over | 13,306 |
| 18 years and over | 12,926 |
| 21 years and over | 12,430 |
| 62 years and over | 3,942 |
| 65 years and over | 3,250 |
| Total population | 16,664 |
| One race | 16,234 |
| White | 16,062 |
| Black or African American | 107 |
| American Indian and Alaska Native | 17 |
| Asian | 5 |
| Native Hawaiian and Other Pacific Islander | 0 |
| Some other race | 43 |
| Two or more races | 430 |
| Citizen, VOTING AGE 18 and over population | 12,881 |
| Male Citizen, VOTING AGE 18 and over population | 6,344 |
| Female Citizen, VOTING AGE 18 and over population | 6,537 |
Social characteristics in Piatt County, Illinois
| Total households | 6,686 |
| Family households (families) | 3,755 |
| Married-couple family | 493 |
| Male householder, no wife present, family | 1,123 |
| Female householder, no husband present, family | 961 |
| Nonfamily households | 1,315 |
| Average household size | 2,255 |
| Average family size | 2.48 |
Economic characteristics in Piatt County, Illinois
| Total households | 6,686 |
| Less than $10,000 | 257 |
| $10,000 to $14,999 | 133 |
| $15,000 to $24,999 | 409 |
| $25,000 to $34,999 | 466 |
| $35,000 to $49,999 | 816 |
| $50,000 to $74,999 | 1,200 |
| $75,000 to $99,999 | 1,042 |
| $100,000 to $149,999 | 1,503 |
| $150,000 to $199,999 | 501 |
| $200,000 or more | 359 |
| Median household income (dollars) | 77,559 |
Housing characteristics in Piatt County, Illinois
| Total housing units | 7,359 |
| Occupied housing units | 6,686 |
| Vacant housing units | 673 |
| Total housing units | 7,359 |
| 1-unit, detached | 6,300 |
| 1-unit, attached | 311 |
| 2 units | 72 |
| 3 or 4 units | 111 |
| 5 to 9 units | 145 |
| 10 to 19 units | 108 |
| 20 or more units | 144 |
| Mobile home | 168 |
| Boat, RV, van, etc. | 0 |
| Total housing units | 7,359 |
| Built 2014 or later | 0 |
| Built 2010 to 2013 | 312 |
| Built 2000 to 2009 | 828 |
| Built 1990 to 1999 | 984 |
| Built 1980 to 1989 | 588 |
| Built 1970 to 1979 | 1,273 |
| Built 1960 to 1969 | 723 |
| Built 1950 to 1959 | 725 |
| Built 1940 to 1949 | 387 |
| Built 1939 or earlier | 1,539 |
| Total housing units | 7,359 |
| 1 room | 77 |
| 2 rooms | 97 |
| 3 rooms | 308 |
| 4 rooms | 655 |
| 5 rooms | 1,429 |
| 6 rooms | 1,246 |
| 7 rooms | 1,228 |
| 8 rooms | 939 |
| 9 rooms or more | 1,380 |
| Median rooms | 6.4 |
| Total housing units | 7,359 |
| No bedroom | 77 |
| 1 bedroom | 500 |
| 2 bedrooms | 1,808 |
| 3 bedrooms | 3,260 |
| 4 bedrooms | 1,410 |
| 5 or more bedrooms | 304 |
| Occupied housing units | 6,686 |
| Owner-occupied | 5,532 |
| Renter-occupied | 1,154 |
| Average household size of owner-occupied unit | 2.56 |
| Average household size of renter-occupied unit | 2.11 |
| Occupied housing units | 6,686 |
| Moved in 2017 or later | 358 |
| Moved in 2015 to 2016 | 1,672 |
| Moved in 2010 to 2014 | 1,155 |
| Moved in 2000 to 2009 | 1,565 |
| Moved in 1990 to 1999 | 768 |
| Moved in 1989 and earlier | 1,168 |
| Owner-occupied units | 5,532 |
| Less than $50,000 | 281 |
| $50,000 to $99,999 | 1,116 |
| $100,000 to $149,999 | 1,320 |
| $150,000 to $199,999 | 1,056 |
| $200,000 to $299,999 | 1,006 |
| $300,000 to $499,999 | 559 |
| $500,000 to $999,999 | 182 |
| $1,000,000 or more | 12 |
| Median (dollars) | 152,000 |
| Owner-occupied units | 5,532 |
| Housing units with a mortgage | 3,237 |
| Housing units without a mortgage | 2,295 |
| Occupied units paying rent | 1,029 |
| Less than $500 | 65 |
| $500 to $999 | 611 |
| $1,000 to $1,499 | 241 |
| $1,500 to $1,999 | 73 |
| $2,000 to $2,499 | 29 |
| $2,500 to $2,999 | 0 |
| $3,000 or more | 10 |
| Median (dollars) | 875 |
| No rent paid | 125 |
Demographic data for Piatt County, IL and each city in the county. Lists of cities by population, wealth and poverty in Piatt County, IL.
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