Village · Illinois
Marissa, Illinois
Marissa, village, in St. Clair County, Illinois. Marissa had 1,724 residents on July 1, 2025 by the Census Bureau's estimate, down 5.8% since 2020; the 2020 Census counted 1,833 and the ACS 2020-2024 5-year estimates put it at 1,232 (±207). GEOID 1746955.
Residents, July 2025 estimate
1,724
Census Bureau estimate (no margin published)
2020 Census count: 1,833 · ACS 2020-2024: 1,232 ±207
Median household income
$54,814
±$18,444 (90% margin)
Illinois: $83,390
Median home value
$99,500
±$18,606 (90% margin)
Illinois: $263,300
Median gross rent
$702
±$226 (90% margin)
Illinois: $1,274
Where is Marissa and what county is it in?
Marissa is a village in St. Clair County, Illinois. It covers 7.2 square miles of land, 254 residents per square mile in 2020.
Marissa is in the St. Louis, MO-IL metropolitan statistical area, which takes in 15 counties (Census Bureau delineation, July 2023).
Marissa lies entirely within Marissa Township, a township with its own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Marissa, and is it growing?
The Census Bureau estimates that 1,724 people lived in Marissa on July 1, 2025, down 5.8% since 2020, a steeper fall than Illinois's (−0.8%). The 2020 Census counted 1,833 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 1,232 (±207).
| Measure | Marissa | St. Clair County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,232 ±207 | 253,694 | no clear change |
| Households | 577 ±91 | 100,846 | no clear change |
| Average household size | 2.14 ±0.23 | 2.47 | no clear change |
| Housing units | 753 ±114 | 115,630 | no clear change |
Marissa's population since 2000
From 2,141 in 2000 to 1,724 in 2025: down 19.5%. The 2000, 2010 and 2020 figures are census counts, each for Marissa as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Marissa?
The median resident of Marissa is 42.9 years old; 18.0% are under 18 and 20.7% are 65 or older. The largest group is non-Hispanic white residents at 82.8%, then non-Hispanic residents of two or more races at 11.9%.
| Measure | Marissa | St. Clair County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.9 ±8.4 | 39.9 | no clear change |
| Under 18 years | 18.0% ±4.8 pts | 23.0% | – |
| 65 years and over | 20.7% ±5.7 pts | 17.3% | – |
| Male | 47.2% ±5.1 pts | 48.5% | – |
| Hispanic or Latino (any race) | 5.0% ±4.1 pts | 5.1% | – |
| White alone, not Hispanic | 82.8% ±8.8 pts | 59.1% | −16.7 pts |
| Black or African American alone, not Hispanic | 0.0% ±3.0 pts | 27.7% | – |
| Asian alone, not Hispanic | 0.0% ±3.0 pts | 1.6% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.4% ±0.6 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±3.0 pts | 0.0% | – |
| Two or more races, not Hispanic | 11.9% ±8.5 pts | 5.8% | – |
| Some other race alone, not Hispanic | 0.0% ±3.0 pts | 0.5% | – |
| Born outside the United States | 0.4% ±0.7 pts | 3.3% | – |
| Speak a language other than English at home (age 5+) | 1.1% ±1.1 pts | 5.0% | – |
| Civilian veterans (age 18+) | 7.7% ±3.4 pts | 11.5% | – |
| With a disability | 18.8% ±5.6 pts | 15.2% | – |
| No health insurance coverage | 4.0% ±2.5 pts | 5.1% | no clear change |
| High school graduate or higher (age 25+) | 97.6% ±1.9 pts | 93.5% | – |
| Bachelor's degree or higher (age 25+) | 12.3% ±4.9 pts | 31.8% | no clear change |
| Graduate or professional degree (age 25+) | 6.0% ±3.9 pts | 13.8% | – |
| Lived in the same house a year earlier | 98.0% ±1.5 pts | 88.3% | – |
| Moved from another state in the past year | 0.5% ±0.8 pts | 3.0% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Marissa earn?
Half of Marissa's 577 households earn less than $54,814 a year (±$18,444), against $73,854 in St. Clair County and $83,390 in Illinois. In 2015-2019 it was $49,494 in 2024 dollars; the margins of error cannot tell the two periods apart. 12.8% of residents live below the poverty line.
| Measure | Marissa | St. Clair County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $54,814 ±$18,444 | $73,854 | no clear change |
| Mean household income | $75,503 ±$10,286 | $96,049 | – |
| Per capita income | $35,629 ±$4,558 | $38,942 | no clear change |
| People below the poverty line | 12.8% ±5.5 pts | 13.6% | no clear change |
| Children under 18 below the poverty line | 20.2% ±13.8 pts | 18.9% | – |
| Households receiving SNAP | 34.5% ±11.8 pts | 16.2% | – |
| Households with a computer | 92.5% ±4.5 pts | 94.2% | – |
| Households with a broadband subscription | 83.9% ±6.8 pts | 89.7% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Marissa?
Owners occupy 78.7% of Marissa's occupied homes and renters 21.3%. The median owner-occupied home is valued at $99,500 by its owner (±$18,606). The median renter pays $702 a month including utilities, and 64.4% of renters pay 35% or more of their income on rent.
| Measure | Marissa | St. Clair County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $99,500 ±$18,606 | $180,300 | no clear change |
| Median gross rent | $702 ±$226 | $1,090 | no clear change |
| Renters paying 35% or more of income on rent | 64.4% ±31.1 pts | 39.8% | no clear change |
| Median monthly owner costs, with a mortgage | $1,083 ±$120 | $1,645 | – |
| Owner-occupied homes | 78.7% ±11.0 pts | 68.4% | no clear change |
| Renter-occupied homes | 21.3% ±11.0 pts | 31.6% | – |
| Housing units | 753 ±114 | 115,630 | no clear change |
| Homeowner vacancy rate | 0.0% ±7.7 pts | 1.1% | – |
| Rental vacancy rate | 8.2% ±18.3 pts | 4.7% | – |
| Single-family detached homes | 76.8% ±8.9 pts | 72.1% | – |
| Mobile homes | 9.3% ±4.7 pts | 4.4% | – |
| Built 2020 or later | 0.0% ±4.9 pts | 0.9% | – |
| Built 2010 to 2019 | 1.2% ±1.7 pts | 7.3% | – |
| Built 1939 or earlier | 34.0% ±9.0 pts | 13.5% | – |
| Households with no vehicle | 7.3% ±5.0 pts | 7.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Marissa building?
Builders took permits for 0 new housing units in Marissa in 2025 (0 in single-family houses), 0.0 per 1,000 residents against 1.5 across Illinois.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Marissa work and get to work?
73.9% of Marissa's workers drive alone and 12.1% work from home. The average trip to work takes 30.1 minutes.
| Measure | Marissa | St. Clair County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 63.0% ±7.5 pts | 63.4% | – |
| Unemployment rate | 14.2% ±9.8 pts | 6.0% | – |
| Drove alone to work | 73.9% ±9.0 pts | 75.4% | – |
| Carpooled | 13.2% ±8.6 pts | 8.1% | – |
| Public transportation | 0.0% ±6.9 pts | 1.6% | – |
| Walked | 0.8% ±1.5 pts | 1.5% | – |
| Worked from home | 12.1% ±5.7 pts | 12.4% | – |
| Mean travel time to work | 30.1 min ±5.4 | 24.0 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Marissa?
No census tract lies mostly in Marissa; 1 tract reaches into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 5040.02St. Clair County | 5,136 | $78,235 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Marissa) · Census block assignment files
How does Marissa compare with other places in Illinois?
By the Census Bureau's July 2025 estimates, Marissa is the 8,231st-most populous of the 19,476 U.S. incorporated places that have one and the 504th-most populous of 1,294 in Illinois.
Marissa ranks 1,205th of 1,380 places in Illinois with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 504th | 1,294 |
| Growth 2020-2025 (PEP) | 1,331st | 1,347 |
| Residents per square mile | 862nd | 1,383 |
| Median household income | 1,205th | 1,380 |
| Per capita income | 851st | 1,383 |
| Median home value | 1,185th | 1,379 |
| Median gross rent | 1,158th | 1,280 |
| Poverty rate | 385th | 1,119 |
| Bachelor's degree or higher | 1,265th | 1,369 |
| Median age | 478th | 1,383 |
| Owner-occupied share | 647th | 1,382 |
| Work from home | 437th | 1,015 |
| Travel time to work | 273rd | 1,382 |
Marissa's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare Marissa with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Marissa?
19 of the 57 figures for Marissa on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Marissa are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Marissa.