HomeIllinoisMadison CountyAlton
Alton, Illinois: commercial real estate data.
Alton is a Census city of 25,279 people across 15.67 square miles of land, in Madison County. Median household income is $54,568, 59.9 percent of occupied homes are owned, and the SBA record carries 18 7(a) approvals to borrowers here worth $14.6 m since FY2020.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Alton
What Alton is
- Census place typecity
- Land area15.67 sq mi
- Water area1.28 sq mi
- Population per square mile of land1,613
- County holding the largest share of its areaMadison County, 100.0 percent
US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Alton
How many people live in Alton
- Population25,279
- Median age38.0
- Population under 185,839
- Share under 1823.1 percent
- Population 65 and over4,354
- Share 65 and over17.2 percent
- Households10,714
- Family households5,754
- Share of households that are families53.7 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Alton
Income and work in Alton
- Median household income$54,568
- Per capita income$29,314
- Civilian labor force12,260
- Employed11,604
- Unemployed656 plus or minus 187
- Unemployment rate5.4 percent plus or minus 1.5
- Adults 25 and over17,651
- Adults 25 and over with a high school diploma or higher91.3 percent
- Adults 25 and over with a bachelor degree or higher21.5 percent
- Adults 25 and over with a graduate degree8.2 percent
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Alton
Housing in Alton
- Housing units12,551
- Occupied units10,714
- Vacant units1,837
- Vacancy rate14.6 percent
- Owner occupied6,419
- Renter occupied4,295
- Ownership rate59.9 percent
- Median owner-occupied home value$103,700
- Median gross rent, monthly$1,015
- Annual rent as a share of median income22.3 percent
- Single family units9,698
- Share single family77.3 percent
- Units in buildings of two or more2,497
- Share in buildings of two or more19.9 percent
- Mobile homes356 plus or minus 118
- Median year structure built1953
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Alton
How Alton gets to work
- Workers 16 and over who commute10,254
- Commuting under 15 minutes3,673
- Share commuting under 15 minutes35.8 percent
- Commuting 30 minutes or more3,226
- Share commuting 30 minutes or more31.5 percent
- Drove alone73.8 percent
- Carpooled10.2 percent plus or minus 2.5
- Public transport1.5 percent plus or minus 0.9
- Walked2.3 percent plus or minus 1.7
- Worked from home9.7 percent plus or minus 2.2
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Alton
SBA loans in Alton (7(a))
- Approvals18
- Gross approval$14,570,500
- Average approval$809,472
- Median approval$268,900
- Largest approval$3,305,000
- Jobs supported223
- Jobs per approval12.4
- Loans with a final outcome8
- Paid in full7
- Charged off1
- Median term150 months
- Share on real estate terms of 20 years or more44.4 percent
- Share to franchises27.8 percent
- Distinct lenders10
- Distinct industries by NAICS14
Counted by borrower city: approvals to borrowers whose address is in Alton, in any county, FY2020 to FY2026. Only 8 loans have reached a final outcome, fewer than the 30 a charge-off rate needs, so no rate is published.
US Small Business Administration, 7(a) FOIA release, FY2020 to FY2026 year to date, as of 2026-06-30.
Alton
SBA loans in Alton (504)
- Approvals10
- Gross approval$4,201,000
- Average approval$420,100
- Median approval$318,500
- Largest approval$1,451,000
- Jobs supported216
- Loans with a final outcome7
- Charged off0
- Median term240 months
- Distinct CDCs4
Counted by borrower city: approvals to borrowers whose address is in Alton, in any county, FY2010 to FY2026. Only 7 loans have reached a final outcome, fewer than the 30 a charge-off rate needs, so no rate is published.
US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.
Alton
Flood risk in Alton
- NFIP communityCity of Alton
- NFIP community number170437
- Participating in the NFIPYes
- Community Rating System classNone
- Currently effective map date05/01/84
The City of Alton participates in the National Flood Insurance Program as community 170437 and carries no Community Rating System class, so no CRS premium discount applies to it.
Federal Emergency Management Agency, NFIP Community Status Book (OpenFEMA), as of 2026-09-26.
Madison County, not Alton
Madison County context, not Alton figures
- Establishments in Madison County5,659
- Covered employment, Madison County105,166
- Average annual pay, Madison County$57,153
- Housing units permitted, Madison County366
Every figure in this section is published for Madison County as a whole and is not a measurement of Alton.
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.
Coverage
What this page does not hold.
Parcel detail, zoning and the flood zone at an address are not on this page; they resolve at the address in the platform. How this page was built →
Common questions
Alton questions, answered from the record.
How many people live in Alton, Illinois?
25,279, in 10,714 households. Alton city covers 15.67 square miles of land, which is 1,613 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
What county is Alton in?
Madison County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.
What is the median household income in Alton?
$54,568. The median owner-occupied home is valued at $103,700. Median gross rent is $1,015 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
How much SBA lending goes to Alton businesses?
18 7(a) approvals totaling $14.6 m since FY2020, across 10 lenders, median approval $268,900, plus 10 504 approvals worth $4.2 m since FY2010. These count approvals to borrowers whose address is in Alton, not projects sited inside the place boundary, and they are approvals recorded in the release rather than loans disbursed.
Do SBA loans to Alton borrowers get paid back?
No rate is published for Alton. Only 8 loans have reached a final outcome, fewer than the 30 a charge-off rate needs, so no rate is published. The counts are shown instead.
Is Alton in the National Flood Insurance Program?
Yes. Alton appears in the FEMA Community Status Book as Alton, city of, community 170437, 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 Alton figures?
No, and they are labeled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Madison 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 Alton.
Is zoning published for Alton?
No. Nothing on this page presents parcel level zoning.