Census tract · Allegheny County
Census Tract 4688, Allegheny County, Pennsylvania
Census Tract 4688, GEOID 42003468800, in Allegheny County, Pennsylvania, entirely within Carnegie. 2,500 residents in the ACS 2020-2024 5-year estimates (±291); the 2020 Census counted 2,553.
Residents, 2020-2024
2,500
±291 (90% margin)
2020 Census count: 2,553
Median household income
$64,479
±$14,256 (90% margin)
Allegheny County: $78,548
Median home value
$161,100
±$52,628 (90% margin)
Allegheny County: $227,600
Median gross rent
$694
±$266 (90% margin)
Allegheny County: $1,153
Where is Census Tract 4688?
Census Tract 4688 is one of 394 census tracts in Allegheny County, Pennsylvania. It covers 0.42 square miles of land, 6,064 residents per square mile in 2020. Its GEOID, 42003468800, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Carnegie | 100% |
5 census tracts border Census Tract 4688: Tract 4580.02 ($100,503), Tract 4592.01 ($84,141), Tract 4687 ($84,135), Tract 4689 ($61,708) and Tract 4706 ($62,357). The figure in brackets is each tract's median household income.
Whether a tract counts as low- or moderate-income for bank lending (the Community Reinvestment Act) is set by the FFIEC against its metro area's family income: look it up in the FFIEC census geocoder.
Source: 2024 Gazetteer and 2020 block assignment files, U.S. Census Bureau · Census reference files
How many people live in Census Tract 4688?
The 2020-2024 American Community Survey puts Census Tract 4688's population at 2,500 (±291) in 1,423 households; the 2020 Census counted 2,553 residents and 1,410 housing units.
| Measure | Tract 4688 | Carnegie |
|---|---|---|
| Total population | 2,500±291 | 7,978 |
| Households | 1,423±153 | 4,217 |
| Average household size | 1.75±0.13 | 1.89 |
| Housing units | 1,477±155 | 4,527 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Census Tract 4688?
The median resident of Census Tract 4688 is 40.9 years old; 12.4% are under 18 and 21.3% are 65 or older. The largest group is non-Hispanic white residents at 85.8%, then non-Hispanic Black residents at 6.2%.
| Measure | Tract 4688 | Carnegie |
|---|---|---|
| Median age | 40.9±2.8 | 40.4 |
| Under 18 years | 12.4%±2.7 pts | 16.5% |
| 65 years and over | 21.3%±4.7 pts | 21.4% |
| Hispanic or Latino (any race) | 0.7%±1.0 pts | 2.2% |
| White alone, not Hispanic | 85.8%±7.5 pts | 79.7% |
| Black or African American alone, not Hispanic | 6.2%±5.1 pts | 10.2% |
| Asian alone, not Hispanic | 4.0%±4.2 pts | 2.7% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.3 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.3 pts | 0.0% |
| Two or more races, not Hispanic | 3.3%±2.8 pts | 5.2% |
| Some other race alone, not Hispanic | 0.0%±1.3 pts | 0.0% |
| Born outside the United States | 6.8%±4.5 pts | 7.8% |
| Speak a language other than English at home (age 5+) | 8.9%±5.4 pts | 9.6% |
| Civilian veterans (age 18+) | 5.6%±2.7 pts | 7.9% |
| With a disability | 21.6%±6.9 pts | 16.0% |
| No health insurance coverage | 3.2%±2.1 pts | 3.6% |
| High school graduate or higher (age 25+) | 92.8%±4.3 pts | 93.5% |
| Bachelor's degree or higher (age 25+) | 33.7%±7.8 pts | 36.6% |
| Graduate or professional degree (age 25+) | 10.2%±3.6 pts | 10.6% |
| Lived in the same house a year earlier | 92.8%±4.4 pts | 90.1% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Census Tract 4688 earn?
Half of the 1,423 households in Census Tract 4688 earn less than $64,479 a year (±$14,256), against $78,548 across Allegheny County: 241st highest of the county's 374 tracts with a reliable estimate. 8.9% of residents live below the poverty line.
| Measure | Tract 4688 | Carnegie |
|---|---|---|
| Median household income | $64,479±$14,256 | $67,656 |
| Mean household income | $80,638±$16,355 | $81,524 |
| Per capita income | $47,731±$9,221 | $44,498 |
| People below the poverty line | 8.9%±4.7 pts | 11.7% |
| Children under 18 below the poverty line | 5.1%±8.0 pts | 27.1% |
| Households receiving SNAP | 22.5%±7.5 pts | 18.8% |
| Households with a computer | 91.6%±5.5 pts | 91.0% |
| Households with a broadband subscription | 83.1%±8.2 pts | 86.6% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Census Tract 4688?
Owners occupy 59.0% of Census Tract 4688's occupied homes and renters 41.0%. The median owner-occupied home is valued at $161,100 by its owner (±$52,628). The median renter pays $694 a month including utilities, and 34.3% of renters pay 35% or more of their income on rent.
| Measure | Tract 4688 | Carnegie |
|---|---|---|
| Median home value (owner-occupied) | $161,100±$52,628 | $171,500 |
| Median gross rent | $694±$266 | $890 |
| Renters paying 35% or more of income on rent | 34.3%±17.9 pts | 26.8% |
| Median monthly owner costs, with a mortgage | $1,455±$106 | $1,517 |
| Owner-occupied homes | 59.0%±9.4 pts | 53.5% |
| Renter-occupied homes | 41.0%±9.4 pts | 46.5% |
| Housing units | 1,477±155 | 4,527 |
| Single-family detached homes | 42.7%±8.7 pts | 52.6% |
| Mobile homes | 0.0%±2.2 pts | 0.4% |
| Built 2020 or later | 0.0%±2.2 pts | 0.0% |
| Built 2010 to 2019 | 4.4%±2.8 pts | 1.4% |
| Built 1939 or earlier | 25.7%±7.6 pts | 32.1% |
| Households with no vehicle | 12.5%±6.9 pts | 11.2% |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How do people in Census Tract 4688 get to work?
65.3% of Census Tract 4688's workers drive alone and 21.5% work from home. The average trip to work takes 22.1 minutes.
| Measure | Tract 4688 | Carnegie |
|---|---|---|
| In the labor force (age 16+) | 74.5%±5.9 pts | 73.8% |
| Unemployment rate | 0.5%±0.8 pts | 3.5% |
| Drove alone to work | 65.3%±10.0 pts | 64.8% |
| Carpooled | 9.6%±6.6 pts | 6.4% |
| Public transportation | 0.3%±0.5 pts | 4.7% |
| Walked | 2.4%±3.0 pts | 2.1% |
| Worked from home | 21.5%±9.9 pts | 21.5% |
| Mean travel time to work | 22.1 min±2.5 | 24.6 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
How does Census Tract 4688 compare with the other tracts in Allegheny County?
Among Allegheny County's tracts with a reliable estimate, Census Tract 4688 ranks as shown below (1 = highest).
| Measure | In Allegheny County | In Carnegie |
|---|---|---|
| Population | 231st of 384 | 2nd of 3 |
| Residents per square mile | 103rd of 394 | 1st of 3 |
| Median household income | 241st of 374 | 2nd of 3 |
| Per capita income | 174th of 383 | 1st of 3 |
| Median home value | 248th of 368 | 3rd of 3 |
| Median gross rent | 338th of 356 | 3rd of 3 |
| Poverty rate | 181st of 272 | 2nd of 2 |
| Bachelor's degree or higher | 239th of 372 | 3rd of 3 |
| Median age | 220th of 383 | 2nd of 3 |
| Owner-occupied share | 231st of 374 | 2nd of 3 |
The tracts next to it on Allegheny County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 4190 | 238th | $65,075±$9,937 · within the margin of this tract |
| Tract 4350 | 239th | $64,816±$6,692 · within the margin of this tract |
| Tract 5200.02 | 240th | $64,630±$20,713 · within the margin of this tract |
| Tract 4688 | 241st | $64,479±$14,256 |
| Tract 4507 | 242nd | $64,000±$12,679 · within the margin of this tract |
| Tract 4508 | 243rd | $63,737±$8,255 · within the margin of this tract |
| Tract 4297 | 244th | $63,561±$9,705 · within the margin of this tract |
"Within the margin": the two incomes differ by less than their combined 90% margins, so the survey cannot say which is higher and the ranks between them are not firm.
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · How ranks are computed
How reliable are the figures for Census Tract 4688?
3 of the 18 figures for Census Tract 4688 on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
A census tract's figures rest on a few hundred sampled households over five years, so its margins are wider than a city's. Two tracts differ only when the gap between them is larger than their combined 90% margin (the square root of the sum of the two squared margins). How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · Check it at data.census.gov
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections