Altamont is a city in Effingham County, Illinois, home to about 2,282 people across 1.5 square miles. Its ZIP code is 62411.
Homes sold for a median of $131 per square foot in the three months ending August 2026, a seller’s market.
Each card is that ZIP code’s whole market, including any part outside Altamont. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Altamont’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | St. Louis Lambert International Airport (STL)90 miles away |
|---|---|
| Closer regional airport | Decatur Airport (DEC)54 miles away |
| Nearest city of 250,000+ | St. Louis, MO86 miles away |
| Nearest city of 1 million+ | Chicago, IL200 miles away |
Straight-line distances from the center of Altamont; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Altamont had 2,216 residents in the 2020 census, down 3% since 2000.
It’s the 483rd largest of 1,450 towns in Illinois by population.
Effingham County grew from 20,465 residents in 1900 to 34,668 in 2020.
Effingham County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 89°F in summer, and winter lows average 20°F. About 44 inches of rain and melted snow fall in a typical year, with about 15 inches of snow.
Source: NOAA 1991–2020 climate normals, Effingham 3sw, IL weather station (8 miles away).
32,183 jobs at 1,263 businesses in Effingham County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
22 doctors and other health care providers list an office in Altamont.
Nearest hospitals
Providers with an office here
| Primary care doctors | 2 |
|---|---|
| Dentists | 3 |
| Nurse practitioners and physician assistants | 10 |
| Mental health providers | 2 |
| Physical and occupational therapists | 4 |
| Chiropractors | 1 |
| Pharmacies | 3 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (6 nearby)
Libraries (1 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Altamont CUSD 10. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Altamont Grade SchoolAltamont | Pre-K–8 | 462 | Public | 0.6 mi |
| Altamont High SchoolAltamont | 9–12 | 222 | Public | 0.5 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Altamont Lutheran Interparish SchoolAltamont | K–8 | 183 | Lutheran Church–Missouri Synod | 0.3 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.