United States › Illinois › Lake Petersburg CITY
Lake Petersburg Illinois · 928 residents · 1.81 sq mi
Time machine
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The short version
Lake Petersburg is a city of 928 people in Illinois. At a median age of 60.8, this is an older place than the country as a whole. Owners hold 97% of the housing stock. Households here earn about 73% more than in Illinois as a whole. Few US cities rank higher on income. Households take in $144,375 a year at the median, 76% more than the country as a whole.
At a glance
Wealthier
above the US median
US median: $82,259
Older
median age 60.8
US median: 38.9
More educated
48% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01
Population & growth 514 / sq mi
+21%since 2023
from 426 / sq mi in 2023
US average: 281
from 59.0 in 2023
US average: 38.9
Population, 2010 – 2024
401 545 689 832 976 2010 2020 2024 Lake Petersburg Age distribution, 2024
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $144,375
+13%inflation adjusted, since 2023
from $124,643 in 2023
US average: $82,259
from $67,272 in 2023
US average: $44,673
Households earning $100K+
from 78.0% in 2023
US average: 53.3%
from 0.0% in 2023
US average: 12.5%
from 0.339 in 2023
US average: 0.476
Workforce by industry, 2024
Public administration 23.6%
Professional, scientific, technical 3%
Agriculture, forestry, fishing 0%
Transportation & warehousing 0%
Education & health services 0%
Arts, entertainment, food 0%
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$338,700
−2%inflation adjusted, since 2023
from $336,200 in 2023
US average: $376,019
from 100.0% in 2023
2.9% rent
from 10.8% in 2023
US average: 10.0%
2.21 people
Unchangedsince 2023
from 2.22 people in 2023
US average: 2.54
from 9.2% in 2023
US average: 22.9%
from 2.7 in 2023
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
Section 04
Race & ethnicity 2023
White, non-Hispanic 92.2%(709)
Hispanic / Latino 3.1%(24)
2024
White, non-Hispanic 100%(928)
from 18 in 2023
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 4 more ancestry groups with data from 40.6% in 2023
US average: 35.6%
High school or higher
from 98.9% in 2023
US average: 89.6%
from 11.2% in 2023
US average: 14.0%
Section 06
Commute & transportation from 34.6 min in 2023
US average: 26.5
from 78.2% in 2023
US average: 68.9%
from 10.2% in 2023
US average: 8.5%
from 0.0% in 2023
US average: 3.2%
from 11.6% in 2023
US average: 15.0%
from 0.0% in 2023
US average: 2.4%
from 0.0% in 2023
US average: 0.4%
from 0.0% in 2023
US average: 8.3%
Section 07
Work & employment from 2.9% in 2023
US average: 5.2%
from 55.8% in 2023
US average: 63.5%
Women 20-64 in the labor force
US average: 74.6%
from 17.3% in 2023
US average: 13.1%
from 48.8% in 2023
US average: 42.5%
Section 08
People & community from 4.8% in 2023
US average: 14.1%
from 23.7% in 2023
US average: 6.2%
from 2.9% in 2023
US average: 13.3%
from 6.9% in 2023
US average: 8.4%
100.0%
Unchangedsince 2023
from 100.0% in 2023
US average: 91.0%
Computer in household
US average: 95.5%
from 91.8% in 2023
US average: 77.7%
from 0.0% in 2023
US average: 13.6%
Marital status
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 6.9% in 2023
US average: 8.4%
Direct-purchase
US average: 13.8%
VA health care
US average: 2.2%
Any private
US average: 67.1%
Any public
US average: 36.7%
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, 2024
Gulf War (2001 or later) 7.3%(12)
Gulf War (1990s) 17.7%(29)
Share of the 164 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
Places similar to Lake Petersburg Head to head
Compare Lake Petersburg to nearby cities LAKE PETERSBURG VS
Springfield
Income $66,064 −54%
Home value $162,100 −52%
Population 112,989 +12076%
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LAKE PETERSBURG VS
Chatham
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Home value $243,200 −28%
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LAKE PETERSBURG VS
Jacksonville
Income $65,432 −55%
Home value $128,200 −62%
Population 17,752 +1813%
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LAKE PETERSBURG VS
Lincoln
Income $57,340 −60%
Home value $124,300 −63%
Population 12,981 +1299%
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Frequently asked
How many people live in Lake Petersburg, Illinois? Lake Petersburg, Illinois has about 928 residents according to the 2024 American Community Survey.
What is the median household income in Lake Petersburg, Illinois? The typical household in Lake Petersburg, Illinois earns about $144,375 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 $338,700.
How educated are people in Lake Petersburg, Illinois? About 48.2% 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 2.7% of people in Lake Petersburg, Illinois live below the federal poverty line.
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