HomeIowaSioux CountyAlton
Alton, Iowa: commercial real estate data.
Alton is a Census city of 1,459 people across 1.91 square miles of land, in Sioux County. Median household income is $98,036, 87.8 percent of occupied homes are owned.
Underlined figures are computed by MMCG Analytics, not published by the agency.
Alton
What Alton is
- Census place typecity
- Land area1.91 sq mi
- Water area0 sq mi
- Population per square mile of land764
- County holding the largest share of its areaSioux 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
- Population1,459
- Median age38.1
- Population under 18317 plus or minus 77
- Share under 1821.7 percent
- Population 65 and over203 plus or minus 44
- Share 65 and over13.9 percent
- Households592
- Family households413 plus or minus 90
- Share of households that are families69.8 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$98,036
- Per capita income$46,530
- Civilian labor force951 plus or minus 195
- Employed927 plus or minus 189
- Unemployed24 plus or minus 19
- Unemployment rate2.5 percent plus or minus 1.9
- Adults 25 and over911
- Adults 25 and over with a high school diploma or higher96.7 percent
- Adults 25 and over with a bachelor degree or higher24.3 percent
- Adults 25 and over with a graduate degree6.8 percent plus or minus 3.7
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Alton
Housing in Alton
- Housing units650
- Occupied units592
- Vacant units58 plus or minus 40
- Vacancy rate8.9 percent plus or minus 6.0
- Owner occupied520 plus or minus 104
- Renter occupied72 plus or minus 39
- Ownership rate87.8 percent
- Median owner-occupied home value$218,900
- Median gross rent, monthly$813 plus or minus $732
- Annual rent as a share of median income10.0 percent plus or minus 9.1
- Single family units555 plus or minus 113
- Share single family85.4 percent
- Units in buildings of two or more67 plus or minus 37
- Share in buildings of two or more10.3 percent plus or minus 5.5
- Mobile homes28 plus or minus 25
- Median year structure built1967
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 commute881 plus or minus 188
- Commuting under 15 minutes505 plus or minus 110
- Share commuting under 15 minutes57.3 percent
- Commuting 30 minutes or more69 plus or minus 29
- Share commuting 30 minutes or more7.8 percent plus or minus 2.8
- Drove alone90.3 percent
- Carpooled3.5 percent plus or minus 2.6
- Public transport0.3 percent plus or minus 0.5
- Walked1.1 percent plus or minus 1.1
- Worked from home4.3 percent plus or minus 2.0
US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Alton
SBA loans in Alton (504)
- Approvals1
- Gross approval$330,000
- Average approval$330,000
- Median approval$330,000
- Largest approval$330,000
- Jobs supported0
- Loans with a final outcome0
- Charged off0
- Median term240 months
- Distinct CDCs1
Counted by borrower city: approvals to borrowers whose address is in Alton, in any county, FY2010 to FY2026. Only 0 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 number190508
- Participating in the NFIPYes
- Community Rating System classNone
- Currently effective map date08/02/22(M)
The City of Alton participates in the National Flood Insurance Program as community 190508 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.
Sioux County, not Alton
Sioux County context, not Alton figures
- Establishments in Sioux County1,345
- Covered employment, Sioux County22,957
- Average annual pay, Sioux County$55,762
- Housing units permitted, Sioux County251
Every figure in this section is published for Sioux 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, Iowa?
1,459, in 592 households. Alton city covers 1.91 square miles of land, which is 764 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?
Sioux 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?
$98,036. The median owner-occupied home is valued at $218,900. Median gross rent is $813 per month. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.
Is Alton in the National Flood Insurance Program?
Yes. Alton appears in the FEMA Community Status Book as Alton, city of, community 190508, 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 Sioux 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.