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Katy, TX vs San Marcos, TX

115
Katy
Texas
VS
+19.5%
96
San Marcos
Texas

There is a significant gap in the cost of living between these two cities. San Marcos is 19.5% cheaper than Katy. With a cost index of 96 vs 115, the difference would have a meaningful impact on a household's monthly budget. Someone relocating from San Marcos to Katy should plan for substantially higher expenses across most categories.

On the housing front, median rent in Katy is $1,609/month compared to $1,299/month in San Marcos — a 24% difference. Home values follow the same pattern: San Marcos is more affordable at $269,700 median vs $376,800.

Median household income in Katy is $107,332 compared to $51,030 in San Marcos (+110.3%). While Katy is more expensive, its higher salaries more than compensate — residents there may actually end up with more disposable income. Looking at affordability, residents of Katy spend roughly 18% of their income on rent, less than the 30.5% in San Marcos. The Katy ratio exceeds the commonly recommended 30% threshold, which can put pressure on household budgets.

Climate-wise, both cities share similar average temperatures (71.1°F vs 69.6°F). Katy receives more rainfall at 49.7" per year compared to 31.3" in San Marcos.

Income & Cost

Cost of Living Index
Katy
115
San Marcos
96
16% cheaper
Median Household Income
Katy
$107,332
52% higher
San Marcos
$51,030

Housing

Median Rent
Katy
$1,609
San Marcos
$1,299
19% cheaper
Median Home Value
Katy
$376,800
San Marcos
$269,700
28% cheaper
Population
Katy
23,900
San Marcos
68,920

Salary Equivalency Calculator

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Everyday Prices

BLS Average Prices by metro area

Gasoline (regular)
Katy $3.12
San Marcos $2.85
US $3.07
🥚
Eggs (grade A, large)
Katy $2.54
San Marcos $2.32
US $2.50
🥛
Milk (whole)
Katy $4.09
San Marcos $3.74
US $4.03
🍞
Bread (white)
Katy $1.88
San Marcos $1.72
US $1.85
🍗
Chicken breast
Katy $4.21
San Marcos $3.85
US $4.14
Electricity
Katy $0.18
San Marcos $0.17
US $0.19

Climate

NOAA 30-year normals (1991-2020)

Avg Temp
Katy 71.1°F
San Marcos 69.6°F
Summer High
Katy 95°F
San Marcos 96°F
Winter Low
Katy 45°F
San Marcos 40°F
Rainfall
Katy 49.7"
San Marcos 31.3"
Rainy Days
Katy 119d
San Marcos 78d