Decatur
City in Macon County, Illinois

Decatur is a city in Macon County, Illinois, with 70,522 residents (2020 Census). It sits at 676 ft (206 m) above sea level. The nearest town is Forsyth, 5.1 miles N.
- 70,522residents (2020 Census)
- 676 ftelevation · 206 m
- 44.2 sq miland area · 114.4 km²
- 1,597 / sq mipopulation density
- 62523main ZIP code (3 in total)
About Decatur
Decatur ( dih-KAY-tər) is the largest city in Macon County, Illinois, United States, and its county seat. The city was founded in 1829 and is situated along the Sangamon River and Lake Decatur in Central Illinois. As of the 2020 census, it had a population of 70,522. It is the 17th-most populous city in Illinois and the "fastest shrinking city" in Illinois. Decatur has an economy based on industrial and agricultural commodity processing and production. The city is home to Millikin University and Richland Community College.
Text: Wikipedia · CC BY-SA 4.0
Decatur weather: 7-day forecast
Loading the National Weather Service forecast…
Source: National Weather Service (NOAA).
Nearest webcams to Decatur
There are no webcams in Decatur itself. These are the closest, 38 miles away or more.
Webcams: Windy.com
Living in Decatur
- Median household income
- $51,592
- Median home value
- $99,600
- Median rent
- $845/mo
- Median age
- 39.2
Do you know Decatur? Tell us about it
Help other travelers: share what makes Decatur special. We review every message before publishing it.
Map of Decatur
Tap any street on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Decatur Street View
Drag the image to look around and tap the arrows on the ground to move. If it says there is no imagery, tap a nearby street on the map above.
Open in Google Maps ›Decatur, IL population
Decatur had 70,522 residents in the 2020 Census.
| 2020 Census | 70,522 |
|---|---|
| Density | 1,597 per sq mi (617 per km²) |
Source: U.S. Census Bureau, Decennial Census.
Decatur at a glance
| State | Illinois (IL) |
|---|---|
| County | Macon County |
| Type | City |
| Population | 70,522 (2020) |
| Land area | 44.16 sq mi (114.4 km²) |
| Water area | 4.70 sq mi (12.18 km²) |
| Elevation | 676 ft (206 m) |
| Coordinates | 39.8560° N, 88.9337° W |
| ZIP codes | 62523, 62521, 62526 |
| Official website | ci.decatur.il.us |
| Census code (GEOID) | 1718823 |
Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.
Towns near Decatur
- Forsyth5.1 mi N
- Mount Zion5.6 mi SE
- Long Creek5.8 mi SE
- Elwin6.0 mi S
- Oreana6.6 mi NE
- Harristown6.7 mi W
- Warrensburg8.6 mi NW
- Boody8.7 mi SW
- Macon10.7 mi S
- Argenta10.8 mi NE
- Cerro Gordo10.8 mi E
- Dalton City11.7 mi SE
Straight-line distance between town centers.
Frequently asked questions about Decatur
What county is Decatur in?
Decatur is in Macon County, Illinois.
What is the population of Decatur, IL?
70,522 people lived in Decatur at the 2020 Census.
What is the ZIP code of Decatur, IL?
The main ZIP code is 62523. Other ZIP codes: 62521, 62526.
What is the elevation of Decatur?
676 feet (206 m) above sea level.
What towns are near Decatur?
Forsyth (5.1 mi), Mount Zion (5.6 mi), Long Creek (5.8 mi), Elwin (6.0 mi), Oreana (6.6 mi).
Last updated: