Is it cheaper to live in Philadelphia or Rapid City?

Rapid City, SD is cheaper. Its monthly baseline of $970 (1BR rent + utilities) runs about 32% below Philadelphia, PA's $1,430, mainly because of rent.

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

To keep rent near the recommended 30% of gross income, you'd want to earn roughly $48,000 a year in Philadelphia versus $32,000 in Rapid City.

Which has lower taxes, Philadelphia or Rapid City?

Philadelphia is taxed under Pennsylvania's rules (a top state income tax rate of 3.07% and a 6% state sales tax); Rapid City under South Dakota's (no state income tax and a 4.2% state sales tax).

Philadelphia vs Rapid City Cost of Living 2026

Philadelphia

Pennsylvania

$1,430/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 $1,430 in Philadelphia, PA versus $970 in Rapid City, SD. Overall, Rapid City, SD is roughly 32% cheaper to live in day-to-day than Philadelphia, PA, driven mainly by rent.

Median household income is $60,698 in Philadelphia, PA and $65,712 in Rapid City, SD — about 8% higher in Rapid City, SD. Pennsylvania has a top state income tax rate of 3.07% and a 6% state sales tax; South Dakota has no state income tax and a 4.2% state sales tax.

Philadelphia, PA

Rapid City, SD

Rent

Studio

$1,126

$533

+53% in Philadelphia, PA

1 Bedroom

$1,189

$807

+32% in Philadelphia, PA

2 Bedroom

$1,394

$1,156

+17% in Philadelphia, PA

3 Bedroom

$1,406

$1,260

+10% in Philadelphia, PA

Buying a Home

Median Home Value

$232,400

$270,000

+16% in Rapid City, SD

Income

Median Household Income

$60,698

$65,712

+8% in Rapid City, SD

Metro Median Wage (annual)

$54,310

$46,270

+15% in Philadelphia, PA

People & Lifestyle

Median Age

35.1 yr

39.0 yr

+3.9 yr in Rapid City, SD

Homeownership

52.3%

61.6%

+9.3 pp in Rapid City, SD

Bachelor's+ (25+)

34.6%

36.4%

+1.8 pp in Rapid City, SD

Avg Commute

32.0 min

17.4 min

+14.6 min in Philadelphia, PA

Crime (per 100k/yr)

Violent Crime

917.1

718.9

+22% in Philadelphia, PA

Property Crime

4,615.3

3,795.8

+18% in Philadelphia, PA

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

Climate

Avg Annual Temperature

57.1°F

47.1°F

+10.0°F in Philadelphia, PA

Annual Precipitation

48.5 in

16.3 in

+32.2 in in Philadelphia, PA

Gas

Regular Gasoline

$3.94/gal

$3.85/gal

+2% in Philadelphia, PA

Area: East Coast (PADD 1) vs Midwest (PADD 2).

Public Transit

Base Fare (one-way)

$2.50

—

Adult base one-way fare — SEPTA vs — (2026).

Utilities

Electricity (¢/kWh)

21.7

15.4

+29% in Philadelphia, PA

Natural Gas ($/MCF)

$26.08

$15.26

+41% in Philadelphia, PA

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

Groceries

Milk (gal)

$4.31

about equal

Bread (lb)

$1.92

$1.66

+14% in Philadelphia, PA

Eggs (doz)

$2.19

$3.63

+66% in Rapid City, SD

Ground Beef (lb)

$6.90

$6.77

+2% in Philadelphia, PA

Chicken (lb)

$2.19

$2.10

+4% in Philadelphia, PA

Bananas (lb)

$0.69

$0.62

+11% in Philadelphia, PA

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

State Taxes

Sales Tax (PA / SD)

4.2%

+1.8 pp in PA

Income Tax (top rate)

3.07%

None

+3.1 pp in PA

Philadelphia vs Rapid City — FAQ

Is it cheaper to live in Philadelphia or Rapid City?: Rapid City, SD is cheaper. Its monthly baseline of $970 (1BR rent + utilities) runs about 32% below Philadelphia, PA's $1,430, mainly because of rent.
How much more do you need to earn to live in Philadelphia than in Rapid City?: To keep rent near the recommended 30% of gross income, you'd want to earn roughly $48,000 a year in Philadelphia versus $32,000 in Rapid City.
Which has lower taxes, Philadelphia or Rapid City?: Philadelphia is taxed under Pennsylvania's rules (a top state income tax rate of 3.07% and a 6% 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).