Rock Falls city, Illinois demographics
Population: 8,807
Median age: 39.4
Median household income: 45,780
Rock Falls is a city in Whiteside County, Illinois, United States.
Demographics, population, home values, social and economic characteristics of Rock Falls city, IL.
Population
| 2021 | 8,807 |
| 2020 | 8,914 |
| 2019 | 8,952 |
| 2018 | 8,911 |
| 2017 | 8,898 |
| 2016 | 9,104 |
| 2015 | 9,178 |
| 2014 | 9,111 |
| 2013 | 9,237 |
| 2012 | 9,075 |
| 2011 | 9,237 |
| 2010 | 9,237 |
| 2009 | 9,261 |
Census data for Rock Falls city, Illinois
Demographic and housing estimates in Rock Falls city, Illinois
| Total population | 8,807 |
| Male | 4,230 |
| Female | 4,577 |
| Total population | 8,807 |
| Under 5 years | 584 |
| 5 to 9 years | 381 |
| 10 to 14 years | 766 |
| 15 to 19 years | 510 |
| 20 to 24 years | 592 |
| 25 to 34 years | 1,049 |
| 35 to 44 years | 1,054 |
| 45 to 54 years | 1,008 |
| 55 to 59 years | 462 |
| 60 to 64 years | 894 |
| 65 to 74 years | 898 |
| 75 to 84 years | 414 |
| 85 years and over | 195 |
| Median age (years) | 39.4 |
| Under 18 years | 2,143 |
| 16 years and over | 6,948 |
| 18 years and over | 6,664 |
| 21 years and over | 6,368 |
| 62 years and over | 1,915 |
| 65 years and over | 1,507 |
| Total population | 8,807 |
| One race | 8,164 |
| White | 7,748 |
| Black or African American | 38 |
| American Indian and Alaska Native | 39 |
| Asian | 21 |
| Native Hawaiian and Other Pacific Islander | 0 |
| Some other race | 318 |
| Two or more races | 643 |
| Citizen, VOTING AGE 18 and over population | 6,472 |
| Male Citizen, VOTING AGE 18 and over population | 3,037 |
| Female Citizen, VOTING AGE 18 and over population | 3,435 |
Social characteristics in Rock Falls city, Illinois
| Total households | 3,871 |
| Family households (families) | 1,202 |
| Married-couple family | 437 |
| Male householder, no wife present, family | 914 |
| Female householder, no husband present, family | 854 |
| Nonfamily households | 1,318 |
| Average household size | 1,070 |
| Average family size | 2.25 |
Economic characteristics in Rock Falls city, Illinois
| Total households | 3,871 |
| Less than $10,000 | 275 |
| $10,000 to $14,999 | 241 |
| $15,000 to $24,999 | 533 |
| $25,000 to $34,999 | 348 |
| $35,000 to $49,999 | 681 |
| $50,000 to $74,999 | 743 |
| $75,000 to $99,999 | 565 |
| $100,000 to $149,999 | 343 |
| $150,000 to $199,999 | 81 |
| $200,000 or more | 61 |
| Median household income (dollars) | 45,780 |
Housing characteristics in Rock Falls city, Illinois
| Total housing units | 4,335 |
| Occupied housing units | 3,871 |
| Vacant housing units | 464 |
| Total housing units | 4,335 |
| 1-unit, detached | 3,263 |
| 1-unit, attached | 46 |
| 2 units | 127 |
| 3 or 4 units | 302 |
| 5 to 9 units | 195 |
| 10 to 19 units | 86 |
| 20 or more units | 230 |
| Mobile home | 86 |
| Boat, RV, van, etc. | 0 |
| Total housing units | 4,335 |
| Built 2014 or later | 0 |
| Built 2010 to 2013 | 0 |
| Built 2000 to 2009 | 127 |
| Built 1990 to 1999 | 212 |
| Built 1980 to 1989 | 218 |
| Built 1970 to 1979 | 770 |
| Built 1960 to 1969 | 723 |
| Built 1950 to 1959 | 788 |
| Built 1940 to 1949 | 440 |
| Built 1939 or earlier | 1,057 |
| Total housing units | 4,335 |
| 1 room | 190 |
| 2 rooms | 80 |
| 3 rooms | 575 |
| 4 rooms | 576 |
| 5 rooms | 905 |
| 6 rooms | 871 |
| 7 rooms | 596 |
| 8 rooms | 234 |
| 9 rooms or more | 308 |
| Median rooms | 5.3 |
| Total housing units | 4,335 |
| No bedroom | 207 |
| 1 bedroom | 701 |
| 2 bedrooms | 963 |
| 3 bedrooms | 1,772 |
| 4 bedrooms | 586 |
| 5 or more bedrooms | 106 |
| Occupied housing units | 3,871 |
| Owner-occupied | 2,560 |
| Renter-occupied | 1,311 |
| Average household size of owner-occupied unit | 2.28 |
| Average household size of renter-occupied unit | 2.19 |
| Occupied housing units | 3,871 |
| Moved in 2017 or later | 340 |
| Moved in 2015 to 2016 | 1,017 |
| Moved in 2010 to 2014 | 870 |
| Moved in 2000 to 2009 | 624 |
| Moved in 1990 to 1999 | 463 |
| Moved in 1989 and earlier | 557 |
| Owner-occupied units | 2,560 |
| Less than $50,000 | 390 |
| $50,000 to $99,999 | 1,623 |
| $100,000 to $149,999 | 272 |
| $150,000 to $199,999 | 137 |
| $200,000 to $299,999 | 129 |
| $300,000 to $499,999 | 0 |
| $500,000 to $999,999 | 9 |
| $1,000,000 or more | 0 |
| Median (dollars) | 70,000 |
| Owner-occupied units | 2,560 |
| Housing units with a mortgage | 1,687 |
| Housing units without a mortgage | 873 |
| Occupied units paying rent | 1,284 |
| Less than $500 | 319 |
| $500 to $999 | 659 |
| $1,000 to $1,499 | 298 |
| $1,500 to $1,999 | 8 |
| $2,000 to $2,499 | 0 |
| $2,500 to $2,999 | 0 |
| $3,000 or more | 0 |
| Median (dollars) | 640 |
| No rent paid | 27 |
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