Southside Flats, South Pittsburgh, PA demographics:
population, income, and more

Total population
6,777
-3.2% year-over-year change
Median household income
$67,345/yr
-5.5% year-over-year change
Housing units
4,554
-0.2% year-over-year change

Southside Flats population

How many people live in Southside Flats

Southside Flats is home to 6,777 residents, according to the most recent Census data. Gender-wise, 49.1% of Southside Flats locals are male, and 50.9% are female.

Total population
6,777
-3.2% year-over-year change
Gender ratio
Male
49.1%
3,330
Female
50.9%
3,447
Value Percent YoY change
Male 3,330 49.1% -5.5%
Female 3,447 50.9% -0.9%
A higher population often means more rental variety and livelier areas. The gender balance—how many men live here compared to women—can reveal a lot about the community and the lifestyles of its residents. Use this info to get a sense of the area's pace and personality.

Age demographics

The median age in Southside Flats is 30, with the population distributed as follows: about 4.1% are children under 15, then 26.5% are in the 15 to 24 age group. Adults between 25 and 44 make up 41.7% of the population, while another 13.8% fall into the 45 to 64 bracket. Finally, around 14% are 65 or older.

Median age
30.2
Age breakdown
Under 15
4.1%
15 to 24
26.5%
25 to 44
41.7%
45 to 64
13.8%
Over 65
14%
Value Percent YoY change
Under 15 277 4.1% -0.4%
15 to 24 1,793 26.5% 0.7%
25 to 44 2,827 41.7% -13.9%
45 to 64 934 13.8% 4.6%
Over 65 946 14% 23.3%
The age composition helps you get insight into who lives in the area. A younger population might mean a more active, fast-paced vibe, while an older one could suggest a quieter, slower lifestyle. If there's a balanced makeup, you’re likely to find a variety of services, housing types, and community spaces that cater to different life stages.

Racial makeup

In Southside Flats, 90.4% of the population are US-born citizens, while 5.1% have gained naturalized citizenship. At the same time, 4.4% of residents are non-citizens. As for race, 83.5% of locals are Caucasian, 9.2% are African American and 2% have Asian roots. There’s also a share of 5.1% that includes residents with two or more races.

Citizenship
U.S.-born citizens
90.4%
Non-U.S.-born citizens
5.1%
Non-citizens
4.4%
Value Percent YoY change
U.S.-born citizens 6,131 90.4% -3.4%
Non-U.S.-born citizens 348 5.1% -8.9%
Non-citizens 299 4.4% 8.3%
Racial breakdown
White
83.5%
Black or African American
9.2%
American Indian and Alaska Native
0%
Asian
2%
Native Hawaiian and other Pacific Islander
0%
Two or more races
5.1%
Other
0.2%
Value Percent
White 5,657 83.5%
Black or African American 623 9.2%
Asian 133 2%
Two or more races 348 5.1%
Other 16 0.2%

Households in Southside Flats

A peek inside Southside Flats households

Southside Flats has 3,857 households, with an average of 2 members in each. Of these, 30.8% are families, while the remaining 69.2% are made up of individuals living alone or with non-relatives, such as roommates.

Households stats

Total households
3,857
-2.6% year-over-year change
Average people per household
2
Non-family households
2,670
Family households
1,187
Value Percent YoY change
Non-family households 2,670 69.2% -4.0%
Family households 1,187 30.8% 0.5%
The mix between family and non-family households gives a glimpse into daily life. A higher percentage of families might mean more parks and schools, while more non-family setups can mean flexible housing and diverse living styles. For renters, this can signal what kinds of homes are common and can help you figure out if the area matches your lifestyle.

Housing in Southside Flats

The housing landscape of Southside Flats

Southside Flats's housing consists of 4,554 units, with 29.2% being detached single-family homes ideal for those wanting space. Attached options, including duplexes and townhouses, make up 23.8% and offer a more compact, shared living style. Then there are the multifamily buildings in the area, and for those seeking flexibility, non-traditional options like mobile homes account for 0.3% of the housing landscape.

Housing units
4,554
-0.2% year-over-year change
Housing types
Value Percent
1 unit, detached 1,331 29.2%
1 unit, attached 1,084 23.8%
2 units 769 16.9%
3 or 4 units 368 8.1%
5 to 9 units 269 5.9%
10 to 19 units 141 3.1%
20 to 49 units 74 1.6%
50 or more units 506 11.1%
Mobile home 12 0.3%
Homes built since 2020
67
9.8% year-over-year change

The age of buildings in Southside Flats

In Southside Flats, the median construction year is 1938. About 55.3% of homes were built before the 1940s, with another 4.6% going up by 1949. Most development happened in the second half of the 20th century. Then, 9.2% of homes were added from 2000 to 2009, 6.7% between 2010 and 2019, and 1.5% are part of the newest wave of development.

Construction year breakdown by decade
Value Percent YoY change
Built in 1939 or earlier 2,520 55.3% -0.5%
Built between 1940 and 1949 210 4.6% 40.9%
Built between 1950 and 1959 265 5.8% -24.1%
Built between 1960 and 1969 183 4% -21.5%
Built between 1970 and 1979 212 4.6% 36.8%
Built between 1980 and 1989 183 4% 27.1%
Built between 1990 and 1999 190 4.2% 6.7%
Built between 2000 and 2009 418 9.2% 1.5%
Built between 2010 and 2019 307 6.7% -12.5%
Built in 2020 or later 67 1.5% 9.8%
As a renter, knowing when homes were built helps you understand the potential condition and design of rental units. Newer builds may have more contemporary layouts, while older homes can offer character or larger lots, depending on the area.

Southside Flats occupancy rates

Out of the 3,857 occupied housing units in Southside Flats, 37.9% are owner-occupied, while 62.1% are lived in by tenants. Meanwhile, 15.3% of all homes on the local market sit vacant.

Occupied housing units
3,857
-2.6% year-over-year change
Occupancy breakdown
Renter occupied
2,396
Owner occupied
1,461
Value Percent YoY
change
Renter occupied 2,396 62.1% 0.4%
Owner occupied 1,461 37.9% -7.3%
Unoccupied housing units
15.3%
Unoccupied housing units refer to homes that are currently without residents—whether they're waiting for renters or owners, used seasonally, or simply unclaimed. A higher share of empty homes may mean more housing availability, while a low number can reflect a tighter market with more competition. This, along with the renter-vs.-owner mix, helps paint a clearer picture of what types of housing and services are likely to be available in the area.

Southside Flats housing costs

Housing costs in Southside Flats come to a median of $1,438 per month, while tenants specifically pay a median gross rent of $1,529.

Median housing costs per month
$1,438/month
This figure sums up typical monthly housing costs for all households in the area. If you own, it includes mortgage payments in addition to property taxes, insurance and HOA fees. If you rent, it accounts for rent plus extras like utilities. It’s useful for seeing how local living expenses stack up compared to other places.
Median gross rent in Southside Flats
$1,529/month
Gross rent gives a more complete look at what renters actually pay, including not just base rent, but also utilities and fees. It’s a key number for evaluating rental affordability in your area of interest and understanding how it compares to nearby locations.

Education in Southside Flats

Southside Flats education at a glance

About 16% of the population in Southside Flats went to high school, while 16.6% pursued college studies. Another 4.5% earned an associate degree and 41.5% hold a bachelor’s. Meanwhile, 18.8% went even further, earning a master’s or doctorate.

Education level
Value Percent YoY change
No high school 167 2.6% 46.5%
High school diploma 1,026 16% 4.9%
College diploma 1,059 16.6% -10.6%
Associate degree 285 4.5% -1.7%
Bachelor's degree 2,655 41.5% -5.4%
Graduate degree 1,204 18.8% -5.8%
A community’s education mix can offer insights into the local economy and housing market. Higher levels of education often align with more job opportunities and stable incomes, which can increase demand for homes and influence both rent prices and rental availability.

Income in Southside Flats

How much people earn in Southside Flats

The average annual household income in Southside Flats was $97,539 in 2024, the most recent annual data available, according to the U.S. Census Bureau. This marked a +6.9% change from the previous year. At the same time, the median income stood at $67,345, reflecting a -5.6% shift over the same period.

Average household income in Southside Flats
$97,539/year
6.9% year-over-year change
Median household income in Southside Flats
$67,345/year
-5.5% year-over-year change

Southside Flats income by age

In Southside Flats, households led by residents aged 25 to 44 — usually in the early to mid stages of their careers — have a median income of $96,250. Those with someone between 45 and 64 in charge, often well established professionally, earn $59,936 overall. Younger households, where the main provider is under 25 and just starting out, report a median income of $41,520, while those led by someone over 65, many of whom may be retired, have about $58,261 in earnings. Overall, 81.5% of the locals in this community live above the poverty line.

Income breakdown by age
Value YoY change
Under 25 $41,520 -0.7%
25 - 44 $96,250 0.5%
45 - 64 $59,936 2.6%
Over 65 $58,261 0.7%
Above poverty level
5,488
Below poverty level
1,248
Value Percent YoY
change
Above poverty level 5,488 81.5% -3.6%
Below poverty level 1,248 18.5% -3.8%

Employment in Southside Flats

Workforce and job types in Southside Flats

93.1% of the working population are employed in professional or administrative positions, while 6.9% are in hands-on or service-based jobs. Also, 6.6% run their own businesses, 66.7% are employed by private companies, and 7.6% work in the public sector.

Workforce demographics

White collar
4,336
Blue collar
323
Value Percent YoY change
White collar 4,336 93.1% -5.5%
Blue collar 323 6.9% -9.0%
Employer type
Self employees
6.6%
Private companies
66.7%
Governmental workers
7.6%
Not for profit companies
19.1%
Value Percent YoY change
Self employees 307 6.6% -12.8%
Private companies 3,109 66.7% -5.8%
Governmental workers 354 7.6% 4.1%
Not for profit companies 889 19.1% -6.7%

Transportation in Southside Flats

How people get around in Southside Flats

Commuting methods vary: 76.9% of residents travel by personal vehicle and 9.9% prefer to walk, while the remaining share relies on public transit or on two wheelers to get from A to B.

Means of transportation
Value Percent YoY change
Car 2,473 76.9% -13.8%
Bus or trolleybus 397 12.4% -9.4%
Bicycle 27 0.8% -10.0%
Walk 318 9.9% 25.2%
Understanding how locals get to work can help you plan your own routine. High car usage might mean you’ll need a vehicle, while strong public transit or walkability could save you the hassle. Commute times also play a big role in quality of life—shorter trips can give you more time for the things you enjoy.

What is the median and average household income in Southside Flats by zipcode?

Zipcode Population Number of households Median income Average income
15203 10,370 5,902 $67,345 $110,183

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FAQs about Southside Flats demographics 

What is the total population of Southside Flats?

Southside Flats has a total population of 6,777 residents, according to the latest release from the U.S. Census Bureau: the 2019-2023 American Community Survey (ACS) 5-year estimates. This figure changed by -3.2% compared to a year ago.

What is the gender ratio in Southside Flats?

The gender ratio in Southside Flats is as follows:
  • 49.1% males (3,330 residents)
  • 50.9% females (3,447 residents)

What is the median age in Southside Flats?

The median age in Southside Flats is 30.2.

What is the age distribution of the population in Southside Flats?

The age distribution in Southside Flats is as follows:
  • Under 15: 4.1% (277 residents)
  • Ages 15-24: 26.5% (1,793 residents)
  • Ages 25-44: 41.7% (2,827 residents)
  • Ages 45-64: 13.8% (934 residents)
  • Over 65: 14% (946 residents)

What is the racial and ethnic makeup of Southside Flats?

The racial and ethnic makeup of Southside Flats is as follows:
  • White: 83.5% (5,657 residents)
  • Black or African American: 9.2% (623 residents)
  • American Indian and Alaska Native: 0% ( residents)
  • Asian: 2% (133 residents)
  • Native Hawaiian and Other Pacific Islander: 0% ( residents)
  • Two or More Races: 5.1% (348 residents)
  • Other: 0.2% (16 residents)

What percentage of the population in Southside Flats are U.S.-born citizens?

U.S.-born citizens represent 90.4% of the population in Southside Flats.

How many housing units are there in Southside Flats?

There are 4,554 housing units in Southside Flats, reflecting a -0.2% change compared to the previous year, according to the latest data from the U.S. Census Bureau.

How many households are in Southside Flats and what is the average household size?

Southside Flats has a total of 3,857 households, with an average of 2 people in each.

What is the median household income in Southside Flats?

Southside Flats has a median household income of $67,345, representing a -5.5% shift from the previous year, according to the U.S. Census Bureau.

What is the job market overview for Southside Flats?

Here’s a detailed breakdown of the local job market:

Job types:
  • White-collar workers: 93.1% (4,336 residents)
  • Blue-collar workers: 6.9% (323 residents)

Places of employment:
  • Self-employed: 6.6% (307 residents)
  • Private companies: 66.7% (3,109 residents)
  • Governmental workers: 7.6% (354 residents)
  • Not-for-profit companies: 19.1% (889 residents)

Data source & methodology

The demographic data on this page was sourced from the latest U.S. Census Bureau release—the 2019–2023 American Community Survey (ACS) 5-year estimates.

The information, issued annually, is compiled and published by the Point2Homes Research Team as soon as new data becomes available.

No representation, guarantee, or warranty is made concerning the accuracy or completeness of modified or aggregated information for particular areas.

Page last updated: September 2025