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Castle Rock, WA vs Prosser, WA

100
Castle Rock
Washington
VS
+18.9%
84
Prosser
Washington

There is a significant gap in the cost of living between these two cities. Prosser is 18.9% cheaper than Castle Rock. With a cost index of 84 vs 100, the difference would have a meaningful impact on a household's monthly budget. Someone relocating from Prosser to Castle Rock should plan for substantially higher expenses across most categories.

On the housing front, median rent in Castle Rock is $1,326/month compared to $894/month in Prosser — a 48% difference. Home values follow the same pattern: Prosser is more affordable at $269,300 median vs $301,000.

Median household income in Castle Rock is $65,272 compared to $66,406 in Prosser (-1.7%). Prosser offers a double advantage: higher earnings combined with a lower cost of living, giving residents significantly more purchasing power. Looking at affordability, residents of Castle Rock spend roughly 24.4% of their income on rent, more than the 16.2% in Prosser.

Climate-wise, both cities share similar average temperatures (53°F vs 53.3°F). Castle Rock receives more rainfall at 42.3" per year compared to 7.6" in Prosser.

Income & Cost

Cost of Living Index
Castle Rock
100
Prosser
84
16% cheaper
Median Household Income
Castle Rock
$65,272
Prosser
$66,406
2% higher

Housing

Median Rent
Castle Rock
$1,326
Prosser
$894
33% cheaper
Median Home Value
Castle Rock
$301,000
Prosser
$269,300
11% cheaper
Population
Castle Rock
2,298
Prosser
6,213

Salary Equivalency Calculator

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Everyday Prices

BLS Average Prices by metro area

Gasoline (regular)
Castle Rock $3.22
Prosser $3.22
US $3.07
🥚
Eggs (grade A, large)
Castle Rock $2.62
Prosser $2.62
US $2.50
🥛
Milk (whole)
Castle Rock $4.22
Prosser $4.22
US $4.03
🍞
Bread (white)
Castle Rock $1.94
Prosser $1.94
US $1.85
🍗
Chicken breast
Castle Rock $4.35
Prosser $4.35
US $4.14
Electricity
Castle Rock $0.16
Prosser $0.16
US $0.19

Climate

NOAA 30-year normals (1991-2020)

Avg Temp
Castle Rock 53°F
Prosser 53.3°F
Summer High
Castle Rock 81°F
Prosser 93°F
Winter Low
Castle Rock 34°F
Prosser 28°F
Rainfall
Castle Rock 42.3"
Prosser 7.6"
Rainy Days
Castle Rock 166d
Prosser 77d