Zip Code 62002
Alton, Illinois — Madison County
📍 ZIP code 62002 is in Alton, Madison County, Illinois.
ZIP code 62002 is located in Alton, Madison County, Illinois. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 30,036. The area code for ZIP code 62002 is 618.
Quick Answer
Zip code 62002 is in Alton, Illinois (Madison County). It has a population of 30,036, median household income of $57,851, and median home value of $114,300.
Population
30,036
Income
$57,851
Home Value
$114,300
Climate
87°F / 22°F
About Zip Code 62002
Zip code 62002 is located in Alton, Illinois, within Madison County. Home to approximately 30,036 residents, this area sits at an elevation of 460 ft and falls within the Central (CST/CDT) timezone. The local area code is 618.
The median household income is $57,851 per year, which is below the national median of $70,784. Homes in this zip code have a median value of $114,300, and the cost of living index is 60 (40% below the national average of 100).
Summers average a high of 87°F while winters drop to 22°F. The area receives about 42 in of rain and 10 in of snow annually. The zip code covers 42 square miles of land area and 2.1 square miles of water.
Key Statistics
30,036
$57,851
$114,300
Central (CST/CDT)
618
460 ft
42 sq mi
41.5
14,832
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Compare With Nearby Zip Codes
| Metric | 62002 | 62018 | 62010 | 62024 | 62095 | 62035 |
|---|---|---|---|---|---|---|
| City | Alton, IL | Cottage Hills, IL | Bethalto, IL | East Alton, IL | Wood River, IL | Godfrey, IL |
| Population | 30,036 | 3,006 | 11,154 | 9,465 | 10,780 | 15,915 |
| Median Income | $57,851 | $41,750 | $72,717 | $60,775 | $66,641 | $91,696 |
| Home Value | $114,300 | $78,400 | $170,000 | $112,500 | $106,700 | $179,900 |
| Cost of Living | 60 | 60 | 73 | 60 | 60 | 80 |
| Median Age | 41.5 | 39.5 | 41.2 | 44.4 | 38.2 | 49.8 |
Cost of Living
100 = National Average. Alton's cost of living is 40% below the national average.
vs. State Avg
Below
Affordability
Very Affordable
Income-to-Home
2.0x
Demographics
Zip code 62002 has a population of 30,036 people with a median age of 41.5. There are 14,832 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Alton (62002) population trend from 2010 to 2024
↓ -3.5%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
87°F
22°F
42 in
10 in
Alton experiences warm summers with average highs around 87°F. Winters are cool with lows averaging 22°F. The area receives about 10 in of snow per year.
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Housing & Economy
Median Home Value
$114,300
Median Household Income
$57,851
With 14,832 housing units across 42 square miles, 62002 has a housing density of 353 units per square mile. The home price-to-income ratio is 2.0x.
Location & Geography
Latitude
38.9395°
Longitude
-90.1251°
Land Area
42 sq mi
Water Area
2.1 sq mi
Nearby Zip Codes
Zip codes closest to 62002 (Alton, IL) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 62002's $57,851. A way to compare Alton to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 62002 (Alton, IL). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Alton, Illinois?
Alton, Illinois uses zip code 62002.
What county is zip code 62002 in?
Zip code 62002 is located in Madison County, Illinois.
What is the population of zip code 62002?
The population of zip code 62002 is 30,036 with a median age of 41.5.
Is 62002 in Alton, Illinois?
Yes, zip code 62002 is in Alton, Madison County, Illinois. The area code is 618.
Frequently Asked Questions
What city is zip code 62002 in?
Zip code 62002 is in Alton, Illinois. It is part of Madison County and uses the Central (CST/CDT) timezone.
What is zip code 62002?
Zip code 62002 is a U.S. postal code in Alton, Illinois (Madison County). It has a population of 30,036 and covers 42 square miles.
What is the population of zip code 62002?
The population of zip code 62002 (Alton, IL) is 30,036 with a median age of 41.5. There are approximately 14,832 housing units in this area.
What is the median income in zip code 62002?
The median household income in zip code 62002 (Alton, IL) is $57,851 per year. The cost of living index is 60 (100 = national average).
What is the average home price in zip code 62002?
The median home value in zip code 62002 (Alton, IL) is $114,300. The cost of living index is 60 compared to the national average of 100.
What county is zip code 62002 in?
Zip code 62002 is located in Madison County, Illinois. The primary city is Alton.
What is the area code for zip code 62002?
Zip code 62002 in Alton, IL uses area code 618. It is located in the Central (CST/CDT) timezone.
Is zip code 62002 a good place to live?
Zip code 62002 (Alton, IL) has a cost of living index of 60 (100 = national average), a median household income of $57,851, and median home values of $114,300. The median age is 41.5. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 62002?
The cost of living index for zip code 62002 (Alton, IL) is 60, where 100 represents the national average. This area is below the national average. Median home value: $114,300.
What schools serve zip code 62002?
Zip code 62002 in Alton, Illinois is served by the local school district of Madison County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.