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Seneca, IL vs Sidney, IL

83
Seneca
Illinois
VS
+1.4%
82
Sidney
Illinois

Seneca, IL and Sidney, IL have a very similar cost of living, with only a 1.4% difference in their overall index. Seneca scores 83 while Sidney scores 82 on the cost of living index, where 100 represents the national average. The day-to-day expenses for residents in both cities are comparable, though differences emerge when looking at specific categories.

On the housing front, median rent in Seneca is $988/month compared to $1,140/month in Sidney — a 13% difference. Interestingly, home values tell a different story: while Seneca has cheaper rent, Sidney actually has lower median home values ($187,000 vs $206,400).

Median household income in Seneca is $91,065 compared to $84,073 in Sidney (+8.3%). While Seneca is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Seneca spend roughly 13% of their income on rent, less than the 16.3% in Sidney.

Climate-wise, Sidney is notably warmer with an average of 52.5°F compared to 49.4°F in Seneca. Sidney receives more rainfall at 37" per year compared to 33.8" in Seneca.

Income & Cost

Cost of Living Index
Seneca
83
Sidney
82
1% cheaper
Median Household Income
Seneca
$91,065
8% higher
Sidney
$84,073

Housing

Median Rent
Seneca
$988
13% cheaper
Sidney
$1,140
Median Home Value
Seneca
$206,400
Sidney
$187,000
9% cheaper
Population
Seneca
2,525
Sidney
849

Salary Equivalency Calculator

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Everyday Prices

BLS Average Prices by metro area

Gasoline (regular)
Seneca $3.20
Sidney $2.85
US $3.07
🥚
Eggs (grade A, large)
Seneca $2.61
Sidney $2.33
US $2.50
🥛
Milk (whole)
Seneca $4.20
Sidney $3.75
US $4.03
🍞
Bread (white)
Seneca $1.93
Sidney $1.72
US $1.85
🍗
Chicken breast
Seneca $4.32
Sidney $3.86
US $4.14
Electricity
Seneca $0.15
Sidney $0.17
US $0.19

Climate

NOAA 30-year normals (1991-2020)

Avg Temp
Seneca 49.4°F
Sidney 52.5°F
Summer High
Seneca 84°F
Sidney 85°F
Winter Low
Seneca 15°F
Sidney 18°F
Rainfall
Seneca 33.8"
Sidney 37"
Rainy Days
Seneca 126d
Sidney 122d