Is it cheaper to live in Las Cruces or Rapid City?

Las Cruces, NM is cheaper. Its monthly baseline of $940 (1BR rent + utilities) runs about 3% below Rapid City, SD's $970, mainly because of rent.

How much more do you need to earn to live in Las Cruces than in Rapid City?

To keep rent near the recommended 30% of gross income, you'd want to earn roughly $32,000 a year in Las Cruces versus $32,000 in Rapid City.

Which has lower taxes, Las Cruces or Rapid City?

Las Cruces is taxed under New Mexico's rules (a top state income tax rate of 5.90% and a 4.875% state sales tax); Rapid City under South Dakota's (no state income tax and a 4.2% state sales tax).

Las Cruces vs Rapid City Cost of Living 2026

Las Cruces

New Mexico

$940/mo est.

Rapid City

South Dakota

$970/mo est.

Monthly estimate = 1BR rent + electricity + gas

A one-person monthly baseline (1BR rent plus typical utilities) runs $940 in Las Cruces, NM versus $970 in Rapid City, SD. Overall, Las Cruces, NM is roughly 3% cheaper to live in day-to-day than Rapid City, SD, driven mainly by rent.

Median household income is $55,176 in Las Cruces, NM and $65,712 in Rapid City, SD — about 16% higher in Rapid City, SD. New Mexico has a top state income tax rate of 5.90% and a 4.875% state sales tax; South Dakota has no state income tax and a 4.2% state sales tax.

Las Cruces, NM

Rapid City, SD

Rent

Studio

$597

$533

+11% in Las Cruces, NM

1 Bedroom

$793

$807

+2% in Rapid City, SD

2 Bedroom

$888

$1,156

+30% in Rapid City, SD

3 Bedroom

$1,177

$1,260

+7% in Rapid City, SD

Buying a Home

Median Home Value

$217,400

$270,000

+24% in Rapid City, SD

Income

Median Household Income

$55,176

$65,712

+19% in Rapid City, SD

Metro Median Wage (annual)

$42,070

$46,270

+10% in Rapid City, SD

People & Lifestyle

Median Age

32.7 yr

39.0 yr

+6.3 yr in Rapid City, SD

Homeownership

55.6%

61.6%

+6.0 pp in Rapid City, SD

Bachelor's+ (25+)

37.3%

36.4%

+0.9 pp in Las Cruces, NM

Avg Commute

18.7 min

17.4 min

+1.3 min in Las Cruces, NM

Crime (per 100k/yr)

Violent Crime

726

718.9

+1% in Las Cruces, NM

Property Crime

4,899.2

3,795.8

+23% in Las Cruces, NM

FBI Crime Data Explorer. Offenses per 100,000 residents per year; agency reporting practices vary, so this is approximate.

Climate

Avg Annual Temperature

58.8°F

47.1°F

+11.7°F in Las Cruces, NM

Annual Precipitation

—

16.3 in

Gas

Regular Gasoline

$3.62/gal

$3.85/gal

+6% in Rapid City, SD

Area: Gulf Coast (PADD 3) vs Midwest (PADD 2).

Utilities

Electricity (¢/kWh)

15.1

15.4

+2% in Rapid City, SD

Natural Gas ($/MCF)

$9.31

$15.26

+64% in Rapid City, SD

Residential, state-level averages (EIA). MCF = 1,000 cubic feet.

Groceries

Milk (gal)

$4.82

$4.31

+10% in Las Cruces, NM

Bread (lb)

$2.04

$1.66

+19% in Las Cruces, NM

Eggs (doz)

$2.19

$3.63

+66% in Rapid City, SD

Ground Beef (lb)

$7.36

$6.77

+8% in Las Cruces, NM

Chicken (lb)

$2.01

$2.10

+4% in Rapid City, SD

Bananas (lb)

$0.70

$0.62

+12% in Las Cruces, NM

Average prices — West vs Midwest (BLS). Regional where available, otherwise U.S. average.

State Taxes

Sales Tax (NM / SD)

4.875%

4.2%

+0.7 pp in NM

Income Tax (top rate)

5.90%

None

+5.9 pp in NM

Las Cruces vs Rapid City — FAQ

Is it cheaper to live in Las Cruces or Rapid City?: Las Cruces, NM is cheaper. Its monthly baseline of $940 (1BR rent + utilities) runs about 3% below Rapid City, SD's $970, mainly because of rent.
How much more do you need to earn to live in Las Cruces than in Rapid City?: To keep rent near the recommended 30% of gross income, you'd want to earn roughly $32,000 a year in Las Cruces versus $32,000 in Rapid City.
Which has lower taxes, Las Cruces or Rapid City?: Las Cruces is taxed under New Mexico's rules (a top state income tax rate of 5.90% and a 4.875% state sales tax); Rapid City under South Dakota's (no state income tax and a 4.2% state sales tax).

Sources: US Census Bureau, ACS 5-Year (rent, income, home value, demographics); NOAA Climate Normals 1981–2010 (climate); EIA weekly retail (gas); Tax Foundation 2026 (state taxes).