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HomeIllinoisMadison CountyAlton city

Alton city, Illinois: commercial real estate data.

Alton city 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.

80 sourced place values · tier FULL · 9 sections · 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$273,700
  • Ninetieth percentile approval$2,268,500
  • Largest approval$3,305,000
  • Jobs supported223
  • Jobs per approval12.4
  • Loans with a final outcome8
  • Paid in full7
  • Charged off1
  • Median term179 months
  • Share on real estate terms of 20 years or more44.4 percent
  • Share to franchises27.8 percent
  • Distinct lenders10
  • Distinct industries by NAICS14

A charge-off rate is not published here. only 8 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.

Alton

SBA loans in Alton (504)

  • Approvals10
  • Gross approval$4,201,000
  • Average approval$420,100
  • Median approval$327,000
  • Largest approval$1,451,000
  • Jobs supported216
  • Loans with a final outcome7
  • Charged off0
  • Median term240 months
  • Distinct CDCs4

US Small Business Administration, 504 FOIA release, FY2010 to FY2026 year to date, as of 2026-06-30.

Alton

Flood risk in Alton

  • Listed NFIP communities1
  • Of those, participating1
  • NFIP community number170437
  • Currently effective map date05/01/84

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.

Madison County, not Alton

Madison County context, not Alton figures

These are Madison County figures. There is no place level equivalent published for any of them, so they are shown as the county backdrop and never as Alton measurements.

  • Establishments in Madison County5,659
  • Employment at those establishments, Madison County93,915
  • Covered employment, Madison County105,166
  • Average annual pay, Madison County$57,153
  • Average weekly wage, Madison County$1,099
  • Housing units permitted, Madison County366
  • Of those, single family, Madison County314
  • County product, 2024, Madison County$16,575,291,000
  • County product change over the prior year, Madison County6.9 percent
  • Average income of an arriving household, Madison County$53,270

Every figure in this section is published for Madison County as a whole and is not a measurement of Alton. 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

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 totalling $14.6 m, across 10 lenders, median approval $273,700, plus 10 504 approvals worth $4.2 m. 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 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 Alton in the National Flood Insurance Program?

Yes. Alton appears in the FEMA Community Status Book as 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 labelled 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?

Not yet. The zoning layer is in build. Nothing on this page presents parcel level zoning.