HomeIllinoisMonroe CountyColumbia city
Columbia city, Illinois: commercial real estate data.
Columbia city is a Census city of 11,127 people across 10.55 square miles of land, lying across Monroe County and St. Clair County. Median household income is $107,606, 82.4 percent of occupied homes are owned, and the SBA record carries 18 7(a) approvals to borrowers here worth $7.9 m.
81 sourced place values · tier FULL · 9 sections · underlined figures are computed by MMCG Analytics, not published by the agency
Columbia
What Columbia is
- Census place typecity
- Land area10.55 sq mi
- Water area0.06 sq mi
- Population per square mile of land1,055
- County holding the largest share of its areaMonroe County, 91.4 percent
- Counties this place lies inMonroe County 91.4 percent, St. Clair County 8.6 percent
Columbia city crosses a county line. The split above is measured from the Census boundary of the place against the county boundaries, by area, so it says where the ground is and not where the town hall is.
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Columbia
How many people live in Columbia
- Population11,127
- Median age42.4
- Population under 182,655
- Share under 1823.9 percent
- Population 65 and over1,839
- Share 65 and over16.5 percent
- Households4,448
- Family households3,092
- Share of households that are families69.5 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Columbia
Income and work in Columbia
- Median household income$107,606
- Per capita income$51,601
- Civilian labor force6,153
- Employed6,064
- Unemployed89 plus or minus 66
- Unemployment rate1.4 percent plus or minus 1.1
- Adults 25 and over7,951
- Adults 25 and over with a high school diploma or higher97.7 percent
- Adults 25 and over with a bachelor degree or higher49.0 percent
- Adults 25 and over with a graduate degree18.1 percent plus or minus 3.7
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Columbia
Housing in Columbia
- Housing units4,735
- Occupied units4,448
- Vacant units287 plus or minus 148
- Vacancy rate6.1 percent plus or minus 3.1
- Owner occupied3,665
- Renter occupied783 plus or minus 163
- Ownership rate82.4 percent
- Median owner-occupied home value$293,000
- Median gross rent, monthly$1,128
- Annual rent as a share of median income12.6 percent
- Single family units4,030
- Share single family85.1 percent
- Units in buildings of two or more669 plus or minus 184
- Share in buildings of two or more14.1 percent plus or minus 3.8
- Mobile homes36 plus or minus 30
- Median year structure built1991
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Columbia
How Columbia gets to work
- Workers 16 and over who commute5,275
- Commuting under 15 minutes1,001 plus or minus 278
- Share commuting under 15 minutes19.0 percent plus or minus 5.1
- Commuting 30 minutes or more1,962
- Share commuting 30 minutes or more37.2 percent
- Drove alone82.0 percent
- Carpooled2.8 percent plus or minus 1.6
- Public transport0.0 percent
- Walked1.8 percent plus or minus 1.3
- Worked from home12.5 percent plus or minus 2.9
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Columbia
SBA loans in Columbia (7(a))
- Approvals18
- Gross approval$7,866,600
- Average approval$437,033
- Median approval$50,000
- Ninetieth percentile approval$1,000,000
- Largest approval$4,500,000
- Jobs supported109
- Jobs per approval6.1
- Loans with a final outcome3
- Paid in full3
- Charged off0
- Median term120 months
- Share on real estate terms of 20 years or more0.0 percent
- Share to franchises11.1 percent
- Distinct lenders9
- Distinct industries by NAICS13
A charge-off rate is not published here. only 3 resolved loans, too few to publish a rate, and a rate over that few outcomes would move several points on one loan.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
Columbia
SBA loans in Columbia (504)
- Approvals15
- Gross approval$17,875,000
- Average approval$1,191,667
- Median approval$576,000
- Largest approval$4,151,000
- Jobs supported209
- Loans with a final outcome6
- Charged off0
- Median term240 months
- Distinct CDCs3
US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
Columbia
Flood risk in Columbia
- Listed NFIP communities1
- Of those, participating1
- NFIP community number170510
- Currently effective map date08/19/25
This community carries no Community Rating System class, so no CRS premium discount applies to it.
FEMA, National Flood Insurance Program Community Status Book, Community Status Book, as retrieved.
Monroe County, not Columbia
Monroe County context, not Columbia figures
These are Monroe County figures. There is no place level equivalent published for any of them, so they are shown as the county backdrop and never as Columbia measurements.
- Establishments in Monroe County875
- Employment at those establishments, Monroe County8,455
- Covered employment, Monroe County8,442
- Average annual pay, Monroe County$48,706
- Average weekly wage, Monroe County$937
- Housing units permitted, Monroe County60
- Of those, single family, Monroe County58
- County product, 2024, Monroe County$1,345,415,000
- County product change over the prior year, Monroe County5.6 percent
- Average income of an arriving household, Monroe County$76,852
Every figure in this section is published for Monroe County as a whole and is not a measurement of Columbia. It is here because a county backdrop is what a credit committee reads a place against, and it is labelled so that it can never be quoted as the place's own.
US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual. US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024. US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.
Coverage
What this page does not hold.
Every item below could be filled with a plausible figure. None of them is. On a page a lender may read, a number that cannot be traced is worse than an absence, so the absences are named.
- Parcel level detail, zoning and flood zone at an address are resolved in the platform, not on this page.
SBA figures count approvals to borrowers whose address is in the place. They are not approvals for projects inside the place boundary: the tape records a borrower city and a project county, and those can differ.
Common questions
Columbia questions, answered from the record.
How many people live in Columbia, Illinois?
11,127, in 4,448 households. Columbia city covers 10.55 square miles of land, which is 1,055 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Columbia in?
Columbia lies in more than one. By area it is 91.4 percent in Monroe County, 8.6 percent in St. Clair County. This page sits under Monroe County because that county holds the largest share. The split is measured from the Census boundary of the place against the county boundaries.
What is the median household income in Columbia?
$107,606. The median owner-occupied home is valued at $293,000. Median gross rent is $1,128 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
How much SBA lending goes to Columbia businesses?
18 7(a) approvals totalling $7.9 m, across 9 lenders, median approval $50,000, plus 15 504 approvals worth $17.9 m. These count approvals to borrowers whose address is in Columbia, not projects sited inside the place boundary, and they are approvals recorded in the release rather than loans disbursed.
Do SBA loans to Columbia borrowers get paid back?
No rate is published for Columbia. only 3 resolved loans, too few to publish a rate, and a percentage over that few outcomes would move several points on a single loan. The counts are shown instead.
Is Columbia in the National Flood Insurance Program?
Yes. Columbia appears in the FEMA Community Status Book as community 170510, with no Community Rating System class, so no CRS discount applies. Whether a specific parcel sits in a mapped special flood hazard area is an address level question the platform answers.
Are the county figures on this page Columbia figures?
No, and they are labelled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Monroe County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Columbia.
Is zoning published for Columbia?
Not yet. The zoning layer is in build. Nothing on this page presents parcel level zoning.
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