South Mountain Population

2010–2026

409

2026 projection

0.5% since 2020 (increase)

0100200300400500201020122014201620182020202220242026

Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.

Use the left and right arrow keys to inspect population observations.

Population by year

Population estimates for South Mountain. Annual change is shown as a percentage. Growth is the total change since the preceding observation.
202640900.00%
2025409-10.24%
2024410-20.49%
202341200.00%
2022412+30.73%
2021409+20.49%
2020407+3910.60%
2019368+61.66%
2018362-20.55%
2017364-30.82%

Showing 10 of 17 years.

South Mountain Demographics

44.8median age

Median age

Female45.6 yrs
Male42.2 yrs

Adults

267
109 seniors · 41%158 other adults

Sex

Female 55.2% · 181Male 44.8% · 147

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101

Race and ethnicity

Tap a square or a group below to highlight it.

Each square is about 1% of residents (roughly 3 people).

Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.

U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002

South Mountain Income

$57,500median household income

Median household income

$57,500

Half of households earn more, half earn less

Median earnings

$51,250

Typical yearly pay for a worker 25 or older.

Poverty rate

6.4%

About 1 in 16 residents

U.S. Census Bureau, 2024 ACS 5-year estimates · Tables S1901, S1501, S1701

South Mountain Marital Status

47% of residents age 15 and older are married.

MarriedNever married
Overall
Male
Female
Marital status of residents age 15 and older
StatusOverallMaleFemale
Married47%55%41%
Never married24%27%22%
Divorced11%15%8%
Widowed15%3%25%
Separated2%0%4%

U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201