Residential delivery area · Illinois
ZIP Code 62002: Alton, IL
ZIP code 62002 uses the postal name Alton, Illinois and lies mostly in Madison County (93% of its land) with the rest in Macoupin County (Census 2020 ZIP-county file). About 30,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $61,414 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Alton (36%) and Godfrey (7%), and 3% in smaller places; 54% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Alton · its only residential ZIP
- County
- Madison County (93%); Macoupin County (7%)
- Census places
- Alton (36%); Godfrey (7%)
- Neighborhood
- Sloan GeoNames
- Metro area
- St. Louis, MO-IL
- House districts
- IL-13 (76%), IL-15 (24%) 119th Congress, by share of land
- State
- Illinois
- Time zone
- Central
- Land area
- 41.3 sq mi · 716 people per sq mi
Where is ZIP code 62002?
62002 centers on 38.939°, -90.135° and covers 41.3 square miles of land plus 2.1 of water. It borders 8 ZIP codes: 62018, 62024, 62010, 62035, 62095, 63386, 62012, 62021.
The map draws ZIP code areas only. For the streets inside 62002, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 62002 compare with the rest of Madison County?
| Measure | 62002 | In Madison County | In IL |
|---|---|---|---|
| People (ACS 2020-2024) | 29,543 | 4th of 36 | 145th of 1,396 |
| Median household income | $61k | 23rd of 28 | 637th of 797 |
| Median home value | $119k | 21st of 28 | 677th of 842 |
Its median household income is higher than in 32% of U.S. residential ZIP codes, and it is denser than 75% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 62002?
The 2020 Census counted 30,176 people in 62002; the ACS, which samples households over 2020-2024, estimates 29,543. Between the 2010 and 2020 censuses its population fell 7.7% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 29,543
- 2020 Census count
- 30,176−7.7% since 2010 (32,704)
- Households
- 12,801
- Median age
- 40.4
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 62002?
Of the 29,543 people the ACS estimates in 62002, 21.6% are under 18 and 19.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (72.3%), then Black (not Hispanic) (16.8%).
- Under 1821.6%
- 18 to 6459.4%
- 65 and older19.0%
- White, not Hispanic72.3%
- Black, not Hispanic16.8%
- Other or two or more7.1%
- Hispanic or Latino2.5%
- Asian, not Hispanic1.4%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 62002 earn?
Median household income is $61,414 (ACS 2020-2024), the 23rd highest of the 28 ranked ZIP codes in Madison County. It rose from $55,374 in 2015-2019 (in 2024 dollars), a change larger than the surveys' margins of error.
- Median household income
- $61,414
- Income per person
- $33,829
- Below the poverty line
- 17.8%
- Unemployed (of the labor force)
- 4.9%
- Adults 25+ with a bachelor's degree
- 24.1%
- Adjusted gross income per tax return, 2022
- $61,94113,700 returns; wages 69% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 62002?
FHFA's house price index for 62002, built from repeat sales and appraisals of the same homes, rose 62% from 2015 to 2025 and rose 47% from 2020 to 2025, and moved +7.8% in 2025.
- Median home value (owners' estimate)
- $118,900
- Median gross rent
- $1,006
- Homes owned by their occupants
- 65.7%
- Housing units
- 14,662
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 62002?
708 business establishments had a location in this ZIP code in 2023, 68 fewer than in 2018; the most are in health care and social assistance (ZIP Code Business Patterns).
- Health care and social assistance128
- Retail trade113
- Accommodation and food services92
- Other services (except public administration)91
- Finance and insurance55
- Professional, scientific, and technical services49
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 62002?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 62018 | Cottage Hills | 3,184 | $40k | 3.3 mi |
| 62024 | East Alton | 9,493 | $57k | 4.6 mi |
| 62010 | Bethalto | 11,028 | $71k | 4.9 mi |
| 62035 | Godfrey | 15,892 | $94k | 5.9 mi |
| 62095 | Wood River | 10,726 | $65k | 6.2 mi |
| 63386 | West Alton, MO | 482 | $110k | 6.6 mi |
| 62012 | Brighton | 6,672 | $93k | 7.3 mi |
| 62021 | Dorsey | 871 | $108k | 9.0 mi |
| 62084 | Roxana | 1,631 | $63k | 7.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.