United States › Illinois › Lake Petersburg CITY · 2020 ACS
Lake Petersburg Illinois · 740 residents · 1.81 sq mi
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The short version
Lake Petersburg is a city of 740 people in Illinois. At a median age of 55.9, this is an older place than the country as a whole. 99% of homes are owner-occupied. Since 2019 the city has risen by half, up 291 people. Households here earn about 41% more than in Illinois as a whole. The poverty rate is 1.3%, under the national 12.8%.
At a glance
Wealthier
above the US median
US median: $66,278
Older
median age 55.9
US median: 38.8
Average education
36% hold a bachelor's degree
US average: 33%
Stable housing
home values roughly flat, inflation adjusted
US median home: $265,253
Section 01
Population & growth from 65.9 in 2019
US average: 38.8
Population, 2010 – 2024
401 545 689 832 976 2010 2020 2024 Lake Petersburg Age distribution, 2020
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Section 02
Income & economy $96,750
+28%inflation adjusted, since 2019
from $74,500 in 2019
US average: $66,278
from $53,490 in 2019
US average: $35,364
Households earning $100K+
from 49.3% in 2019
US average: 43.9%
from 7.3% in 2019
US average: 12.8%
Workforce by industry, 2020
Arts, entertainment, food 9.8%
Public administration 8.1%
Transportation & warehousing 4.3%
Agriculture, forestry, fishing 0%
Professional, scientific, technical 0%
Education & health services 0%
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$266,000
−3%inflation adjusted, since 2019
from $270,400 in 2019
US average: $265,253
from 89.8% in 2019
0.9% rent
1.82 people
+11%since 2019
from 1.64 people in 2019
US average: 2.61
from 3.6 in 2019
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity 2019
White, non-Hispanic 91.1%(409)
Hispanic / Latino 3.8%(17)
2020
White, non-Hispanic 96.5%(714)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 3 more ancestry groups with data from 42.1% in 2019
US average: 32.9%
High school or higher
from 96.8% in 2019
US average: 88.5%
from 19.8% in 2019
US average: 12.7%
Section 06
Commute & transportation from 27.4 min in 2019
US average: 26.9
from 91.5% in 2019
US average: 75.1%
from 0.0% in 2019
US average: 8.4%
Section 07
Work & employment from 5.6% in 2019
US average: 5.4%
from 48.4% in 2019
US average: 63.4%
Women 20-64 in the labor force
US average: 73.3%
from 45.3% in 2019
US average: 39.3%
Section 08
People & community from 4.0% in 2019
US average: 13.5%
from 7.1% in 2019
US average: 8.8%
Computer in household
US average: 91.9%
Marital status (2024)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 7.1% in 2019
US average: 8.8%
Direct-purchase
US average: 13.7%
VA health care
US average: 2.3%
Any private
US average: 68.1%
Any public
US average: 35.2%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2020
Gulf War (2001 or later) 13.3%(14)
Share of the 105 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
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Compare Lake Petersburg to nearby cities LAKE PETERSBURG VS
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Frequently asked
How many people live in Lake Petersburg, Illinois? Lake Petersburg, Illinois has about 740 residents according to the 2020 American Community Survey.
What is the median household income in Lake Petersburg, Illinois? The typical household in Lake Petersburg, Illinois earns about $96,750 a year. Half of households make more than that, and half make less.
Is Lake Petersburg, Illinois expensive? In Lake Petersburg, Illinois, the median home is worth about $266,000.
How educated are people in Lake Petersburg, Illinois? About 35.8% of adults age 25 and over in Lake Petersburg, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Lake Petersburg, Illinois? About 1.3% of people in Lake Petersburg, Illinois live below the federal poverty line.
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