Rapid City SD vs Simi Valley CA — Cost of Living, Crime & Income Comparison 2026

Updated May 2026 · Source: US Census ACS 5-Year (2023), FBI CDE (2023), BLS OEWS (2024)

Rapid City, SD

South Dakota · Population: 76,836

  • Median HH Income$65,712
  • Median Home Price$363,258
  • Unemployment3.2%
  • Bachelor's+36.4%

Simi Valley, CA

California · Population: 125,769

  • Median HH Income$117,703
  • Median Home Price$839,862
  • Unemployment4.5%
  • Bachelor's+37.5%

Detailed Comparison

Demographics

Population
Rapid City
76,836
Simi Valley
125,769
Simi Valley +
Pop. Density / sq mi
Lower = more space
Rapid City
N/A
Simi Valley
N/A
Median Age
Rapid City
39.0
Rapid City +
Simi Valley
41.8
Foreign Born
Rapid City
2.3%
Simi Valley
18.2%
Simi Valley +
White
Rapid City
78.3%
Rapid City +
Simi Valley
63.3%
Black
Rapid City
1.6%
Rapid City +
Simi Valley
1.4%
Asian
Rapid City
1.3%
Simi Valley
10.7%
Simi Valley +
Hispanic
Rapid City
5.6%
Simi Valley
27.1%
Simi Valley +
Spanish at Home
Rapid City
N/A
Simi Valley
N/A

Economy

Median HH Income
Rapid City
$65,712
Simi Valley
$117,703
Simi Valley +
Per Capita Income
Rapid City
$40,447
Simi Valley
$53,828
Simi Valley +
Per Capita Personal Income (MSA)
BEA MSA-level
Rapid City
$69,795
Simi Valley
$77,230
Simi Valley +
Unemployment Rate
Rapid City
3.2%
Rapid City +
Simi Valley
4.5%
Poverty Rate
Rapid City
13.3%
Simi Valley
6.7%
Simi Valley +
Bachelor's Degree+
Rapid City
36.4%
Simi Valley
37.5%
Simi Valley +

Housing

Median Home Value
Zillow ZHVI / Census ACS
Rapid City
$363,258
Rapid City +
Simi Valley
$839,862
Homeownership Rate
Rapid City
61.6%
Simi Valley
73.0%
Simi Valley +

Safety

Violent Crime / 100K
FBI CDE (state-level est.)
Rapid City
405
Rapid City +
Simi Valley
503
Property Crime / 100K
FBI CDE (state-level est.)
Rapid City
1873
Rapid City +
Simi Valley
2388

Health

Obesity Rate
CDC PLACES
Rapid City
34.0%
Simi Valley
24.4%
Simi Valley +
Diabetes Rate
CDC PLACES
Rapid City
11.8%
Simi Valley
10.3%
Simi Valley +
Poor Mental Health
CDC PLACES — 14+ days/month
Rapid City
16.0%
Rapid City +
Simi Valley
16.3%
No Health Insurance
CDC PLACES
Rapid City
9.6%
Simi Valley
7.4%
Simi Valley +
Binge Drinking
CDC PLACES
Rapid City
20.5%
Simi Valley
16.3%
Simi Valley +
Current Smokers
CDC PLACES
Rapid City
15.9%
Simi Valley
10.1%
Simi Valley +

Climate

Avg Annual Temp
NOAA 1991–2020 normal
Rapid City
46.3°F
Simi Valley
N/A
Annual Precipitation
NOAA 1991–2020 normal
Rapid City
18.4 in
Simi Valley
N/A

Air Quality

PM2.5 Annual Avg
EPA AQS (state-level est.)
Rapid City
7.3 µg/m³
Rapid City +
Simi Valley
7.9 µg/m³
Good Air Days
AQI ≤ 50
Rapid City
75.0%
Simi Valley
75.0%
Tie

Commute

Mean Commute Time
Census ACS
Rapid City
18.8 min
Rapid City +
Simi Valley
31.0 min

Which City is Right for You?

Simi Valley leads in median household income at $117,703, while rapid City offers more affordable housing with a median home price of $363,258. On public safety, Rapid City is safer with a violent crime rate of 405 per 100,000 residents, compared to 503 in Simi Valley. Rapid City has a lower unemployment rate at 3.2%, and Rapid City has cleaner air (PM2.5 avg 7.3 µg/m³). For overall health outcomes, Simi Valley scores better with a lower obesity rate of 24.4%.

Compare More Cities

About Rapid City & Simi Valley