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Ontario, CA vs Rocklin, CA

142
Ontario
California
VS
-10.8%
159
Rocklin
California

Ontario is moderately more affordable than Rocklin, with a 10.8% lower cost of living index. Ontario scores 142 compared to 159 for Rocklin, where the US average is 100. This difference means residents of Rocklin can expect to pay noticeably more for everyday expenses, housing, and services.

On the housing front, median rent in Ontario is $1,916/month compared to $2,178/month in Rocklin — a 12% difference. Home values follow the same pattern: Ontario is more affordable at $568,000 median vs $673,300.

Median household income in Ontario is $82,806 compared to $120,916 in Rocklin (-31.5%). While Rocklin is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Ontario spend roughly 27.8% of their income on rent, more than the 21.6% in Rocklin.

Climate-wise, Ontario is notably warmer with an average of 66.8°F compared to 63.4°F in Rocklin. Rocklin receives more rainfall at 19.2" per year compared to 11.6" in Ontario.

Income & Cost

Cost of Living Index
Ontario
142
11% cheaper
Rocklin
159
Median Household Income
Ontario
$82,806
Rocklin
$120,916
32% higher

Housing

Median Rent
Ontario
$1,916
12% cheaper
Rocklin
$2,178
Median Home Value
Ontario
$568,000
16% cheaper
Rocklin
$673,300
Population
Ontario
178,347
Rocklin
72,340

Salary Equivalency Calculator

What does your salary in one city buy you in the other?

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Rent by Bedroom Size

HUD Fair Market Rent (FY 2026) — metro area average

Studio
Ontario $2,020
Rocklin $1,784
12% cheaper
1 Bed
Ontario $2,148
Rocklin $1,871
13% cheaper
2 Bed
Ontario $2,675
Rocklin $2,305
14% cheaper
3 Bed
Ontario $3,520
Rocklin $3,077
13% cheaper
4 Bed
Ontario $4,178
Rocklin $3,552
15% cheaper

Everyday Prices

BLS Average Prices by metro area

Gasoline (regular)
Ontario $3.13
Rocklin $3.22
US $3.07
🥚
Eggs (grade A, large)
Ontario $2.55
Rocklin $2.62
US $2.50
🥛
Milk (whole)
Ontario $4.11
Rocklin $4.22
US $4.03
🍞
Bread (white)
Ontario $1.89
Rocklin $1.94
US $1.85
🍗
Chicken breast
Ontario $4.22
Rocklin $4.35
US $4.14
Electricity
Ontario $0.31
Rocklin $0.26
US $0.19

Climate

NOAA 30-year normals (1991-2020)

Avg Temp
Ontario 66.8°F
Rocklin 63.4°F
Summer High
Ontario 94°F
Rocklin 94°F
Winter Low
Ontario 45°F
Rocklin 41°F
Rainfall
Ontario 11.6"
Rocklin 19.2"
Rainy Days
Ontario 36d
Rocklin 61d