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St. Peter, IL vs Union, IL

56
St. Peter
Illinois
VS
-40.7%
94
Union
Illinois

The cost of living difference between St. Peter, IL and Union, IL is dramatic. St. Peter is 40.7% cheaper than Union, a gap that translates to thousands of dollars per year in household expenses. St. Peter has a cost index of 56 while Union sits at 94, making this one of the more striking comparisons on our site. Relocating between these cities would require a serious reassessment of budget and lifestyle expectations.

When it comes to buying, median home values in St. Peter are $91,400 compared to $224,600 in Union, a 59% gap.

Median household income in St. Peter is $55,000 compared to $100,104 in Union (-45.1%). While Union is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income.

Climate-wise, St. Peter is notably warmer with an average of 53.4°F compared to 49.7°F in Union. St. Peter receives more rainfall at 36" per year compared to 33.2" in Union.

Income & Cost

Cost of Living Index
St. Peter
56
41% cheaper
Union
94
Median Household Income
St. Peter
$55,000
Union
$100,104
45% higher

Housing

Median Rent
St. Peter
$488
Union
Median Home Value
St. Peter
$91,400
59% cheaper
Union
$224,600
Population
St. Peter
256
Union
753

Salary Equivalency Calculator

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Everyday Prices

BLS Average Prices by metro area

Gasoline (regular)
St. Peter
Union $3.20
US $3.07
🥚
Eggs (grade A, large)
St. Peter
Union $2.61
US $2.50
🥛
Milk (whole)
St. Peter
Union $4.20
US $4.03
🍞
Bread (white)
St. Peter
Union $1.93
US $1.85
🍗
Chicken breast
St. Peter
Union $4.32
US $4.14
Electricity
St. Peter
Union $0.15
US $0.19

Climate

NOAA 30-year normals (1991-2020)

Avg Temp
St. Peter 53.4°F
Union 49.7°F
Summer High
St. Peter 86°F
Union 84°F
Winter Low
St. Peter 20°F
Union 16°F
Rainfall
St. Peter 36"
Union 33.2"
Rainy Days
St. Peter 108d
Union 121d