Lake PetersburgIL
This town in Illinois has a population of 928.
Is Lake Petersburg a good place to live?
Lake Petersburg’s typical household income is $144,000, above both Illinois’ towns ($83,000) and U.S. towns ($80,000). No town among the 769 in Illinois we compare has a higher midpoint age than Lake Petersburg. Lake Petersburg has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
928 people, and everyone knows the way
In a town this size, neighbors are the best guide. Ask them anything.
The data
Ordered by what stands out in Lake Petersburg.
Lake Petersburg stands out in Illinois and nationally, with fewer of its working residents who work locally
2.7% of residents live below the poverty line in Lake Petersburg. The top destinations are Springfield (36%), Petersburg (13%) and Lincoln (2%). The mean commuting time here in the town is 33 minutes. Half commute less than 17 miles.
| Lake Petersburg | Typical Illinois town | Typical U.S. town | |
|---|---|---|---|
| Average trip to work | 33 minutes | 26 minutes | 25 minutes |
| Below the poverty line | 2.7% | 8.4% | 9.6% |
| Working residents who work in town | 0.3% | 8.3% | 7.9% |
Where working residents work
Census LEHD 2024 · ACS
Four seasons and pleasant summers: that is Lake Petersburg’s year
About 18 inches of snow fall in a winter here; January nights dip to 19° and July afternoons rise to 86°.
Typical low → high °F
NOAA U.S. Climate Normals, 1991–2020
How healthy Lake Petersburg is
Among adults in Lake Petersburg, 14% have diabetes. Across all 32 CDC measures, Lake Petersburg beats Illinois on 9 and trails on 8. In Lake Petersburg, 30% of adults feel lonely, and 82% had a checkup this year.
| Lake Petersburg | Typical Illinois town | Typical U.S. town | |
|---|---|---|---|
| High blood pressure (CDC PLACES) | 41% | 35% | 35% |
| Feel lonely (CDC PLACES) | 30% | 33% | 33% |
| Yearly checkup (CDC PLACES) | 82% | 78% | 79% |
| Diabetes (CDC PLACES) | 14% | 11% | 12% |
| What stands out | Lake Petersburg | IL |
|---|---|---|
| Fewer uninsured adults | 6.3% | 9.9% |
| Fewer adults facing housing insecurity | 8.7% | 13.2% |
| More adults who have had cancer | 11.9% | 7.6% |
CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA
Natural hazards: moderate risk in Lake Petersburg, mostly inland flooding
FEMA expects less storm and flood damage in Lake Petersburg than in 52% of U.S. communities. Expected losses in Lake Petersburg break down as 46% from inland flooding and 15% from tornadoes.
FEMA National Risk Index · OpenFEMA
A larger share of households own their home in Lake Petersburg than in most of Illinois or the rest of the country
Zillow Home Value Index · Redfin Data Center
Everything we know about Lake Petersburg
Lincoln Tomb and 11 more within 40 miles
Museums, parks, gardens and other places to visit around Lake Petersburg. Close and well known come first.
Big draw15 mi LandmarkLincoln Tomb
in town MuseumLincoln's New Salem
17 mi National Historic SiteLincoln Home National Historic Site124K visitors a year17 mi National MonumentSpringfield 1908 Race Riot National Monument
17 mi MuseumOld State Capitol State Historic Site
29 mi MuseumDickson MoundsPhoto credits
Lincoln Tomb: David Jones, CC BY-SA 2.5 · Lincoln's New Salem: Unknown, CC BY-SA 2.5 · Lincoln Home National Historic Site: Daniel Schwen, CC BY-SA 4.0 · Old State Capitol State Historic Site: Shadow2700 at en.wikipedia, Public domain · Dickson Mounds: MattHucke, CC BY-SA 3.0
Moving to Lake Petersburg: who provides what
Lake Petersburg is unincorporated, so Menard County and regional agencies provide most services.
EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Sep 12, 2025.
100% of working residents leave Lake Petersburg for work
Where Lake Petersburg’s working residents go each day. Line width shows the share.
Census LEHD 2024
Colleges nearby
None within 15 miles of Lake Petersburg; the nearest are
About 3 of every 100 Lake Petersburg residents are enrolled in college, against 6 across Illinois.
About Lake Petersburg
Census-designated place in Illinois, United States
Lake Petersburg is a census-designated place in Menard County, Illinois, United States. Its population was 740 as of the 2020 census. The unincorporated community centers on a small reservoir, which is used extensively by residents for recreation.
From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)
- Area
- 2.0 sq mi
- Elevation
- 597 ft
- Area code
- 618
Questions about Lake Petersburg
Short answers, built from the data on this page.
Is Lake Petersburg, IL a good place to live?
Lake Petersburg has fewer than 1,000 residents, too few for fair grades; the figures below are still real.
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