Cost of Living: Boulder, CO vs Castle Rock, CO

Quick rent-and-take-home comparison

Using a baseline of $70,000/yr gross, take-home is about $4,259/mo in Boulder, CO versus $4,259/mo in Castle Rock, CO. In the model, rent is about 28.03% of gross in Boulder, CO versus 28.35% in Castle Rock, CO, so Boulder, CO tends to feel more affordable for rent.

Take-home in Boulder, CO
$4,259/mo
Income level: below
Take-home in Castle Rock, CO
$4,259/mo
Income level: below
Rent share (1BR) in Boulder, CO
28.03%
COLI tier: mid-range
Rent share (1BR) in Castle Rock, CO
28.35%
COLI tier: mid-range

Compare cost of living, rent, housing prices, and salary affordability between Boulder, CO and Castle Rock, CO.

At a glance

  • Cheaper overall (lower cost-of-living index): Castle Rock, CO
  • Lower rent (median 1BR/2BR): Boulder, CO
  • Lower home prices: Castle Rock, CO
  • Higher median household income: Castle Rock, CO

Cost of Living Index

Boulder, CO: 100 (U.S. = 100) · Castle Rock, CO: 100 (U.S. = 100)

Both cities have the same cost-of-living index (U.S. average = 100).

Median Rent

Boulder, CO: $1,828/mo (midpoint of 1BR/2BR) · Castle Rock, CO: $1,849/mo

Median rent in Castle Rock, CO is $21/mo higher than in Boulder, CO.

Median Home Price

Boulder, CO: $982,600 · Castle Rock, CO: $621,700

Median home price in Boulder, CO is $360,900 higher than in Castle Rock, CO.

Median Household Income

Boulder, CO: $85,364 · Castle Rock, CO: $143,031

Castle Rock, CO has a higher median household income than Boulder, CO by $57,667.

Boulder, CO overview · Castle Rock, CO overview · Popular comparisons