Census tract · Erie County
Census Tract 121, Erie County, Pennsylvania
Census Tract 121, GEOID 42049012100, in Erie County, Pennsylvania, partly within Waterford Township, LeBoeuf Township, Waterford and Mill Village. 7,303 residents in the ACS 2020-2024 5-year estimates (±320); the 2020 Census counted 7,438.
Residents, 2020-2024
7,303
±320 (90% margin)
2020 Census count: 7,438
Median household income
$75,734
±$6,863 (90% margin)
Erie County: $63,354
Median home value
$197,300
±$20,159 (90% margin)
Erie County: $177,000
Median gross rent
$800
±$284 (90% margin)
Erie County: $904
Where is Census Tract 121?
Census Tract 121 is one of 74 census tracts in Erie County, Pennsylvania. It covers 85.57 square miles of land, 87 residents per square mile in 2020. Its GEOID, 42049012100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Waterford Township | 44% |
| LeBoeuf Township | 30% |
| Waterford | 20% |
| Mill Village | 6% |
9 census tracts border Census Tract 121: Tract 1101 in Crawford County ($58,438), Tract 1102.01 in Crawford County ($77,035), Tract 1102.02 in Crawford County ($68,185), Tract 103.01 ($82,779), Tract 112.01 ($85,750), Tract 112.02 ($73,553), Tract 118.01 ($73,047), Tract 120.01 ($80,929) and Tract 122.01 ($95,000). 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 121?
The 2020-2024 American Community Survey puts Census Tract 121's population at 7,303 (±320) in 2,863 households; the 2020 Census counted 7,438 residents and 3,107 housing units.
| Measure | Tract 121 | Erie County |
|---|---|---|
| Total population | 7,303 ±320 | 269,052 |
| Households | 2,863 ±256 | 110,587 |
| Average household size | 2.55 ±0.17 | 2.31 |
| Housing units | 3,076 ±248 | 120,111 |
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 121?
The median resident of Census Tract 121 is 44.8 years old; 21.6% are under 18 and 17.3% are 65 or older. The largest group is non-Hispanic white residents at 93.8%, then Hispanic or Latino residents (of any race) at 4.6%.
| Measure | Tract 121 | Erie County |
|---|---|---|
| Median age | 44.8 ±2.8 | 40.2 |
| Under 18 years | 21.6% ±2.7 pts | 20.7% |
| 65 years and over | 17.3% ±2.2 pts | 19.7% |
| Hispanic or Latino (any race) | 4.6% ±2.4 pts | 4.8% |
| White alone, not Hispanic | 93.8% ±2.5 pts | 81.7% |
| Black or African American alone, not Hispanic | 0.1% ±0.1 pts | 7.0% |
| Asian alone, not Hispanic | 0.2% ±0.2 pts | 2.2% |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.1 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.4 pts | 0.0% |
| Two or more races, not Hispanic | 1.0% ±0.7 pts | 3.9% |
| Some other race alone, not Hispanic | 0.3% ±0.4 pts | 0.4% |
| Born outside the United States | 0.3% ±0.3 pts | 4.9% |
| Speak a language other than English at home (age 5+) | 1.7% ±1.1 pts | 6.9% |
| Civilian veterans (age 18+) | 9.3% ±3.1 pts | 6.9% |
| With a disability | 14.2% ±2.8 pts | 16.2% |
| No health insurance coverage | 4.6% ±2.3 pts | 4.2% |
| High school graduate or higher (age 25+) | 90.4% ±2.7 pts | 92.9% |
| Bachelor's degree or higher (age 25+) | 18.2% ±3.3 pts | 30.3% |
| Graduate or professional degree (age 25+) | 6.0% ±2.4 pts | 11.7% |
| Lived in the same house a year earlier | 89.3% ±4.8 pts | 87.9% |
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 121 earn?
Half of the 2,863 households in Census Tract 121 earn less than $75,734 a year (±$6,863), against $63,354 across Erie County: 19th highest of the county's 71 tracts with a reliable estimate. 10.8% of residents live below the poverty line.
| Measure | Tract 121 | Erie County |
|---|---|---|
| Median household income | $75,734 ±$6,863 | $63,354 |
| Mean household income | $94,526 ±$9,431 | $85,573 |
| Per capita income | $37,570 ±$4,344 | $35,812 |
| People below the poverty line | 10.8% ±3.2 pts | 15.0% |
| Children under 18 below the poverty line | 13.4% ±7.4 pts | 21.0% |
| Households receiving SNAP | 11.4% ±3.8 pts | 19.1% |
| Households with a computer | 95.3% ±3.3 pts | 93.9% |
| Households with a broadband subscription | 84.7% ±5.9 pts | 89.0% |
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 121?
Owners occupy 79.9% of Census Tract 121's occupied homes and renters 20.1%. The median owner-occupied home is valued at $197,300 by its owner (±$20,159). The median renter pays $800 a month including utilities, and 30.7% of renters pay 35% or more of their income on rent.
| Measure | Tract 121 | Erie County |
|---|---|---|
| Median home value (owner-occupied) | $197,300 ±$20,159 | $177,000 |
| Median gross rent | $800 ±$284 | $904 |
| Renters paying 35% or more of income on rent | 30.7% ±14.9 pts | 41.5% |
| Median monthly owner costs, with a mortgage | $1,546 ±$79 | $1,393 |
| Owner-occupied homes | 79.9% ±5.3 pts | 68.1% |
| Renter-occupied homes | 20.1% ±5.3 pts | 31.9% |
| Housing units | 3,076 ±248 | 120,111 |
| Single-family detached homes | 74.8% ±5.5 pts | 68.3% |
| Mobile homes | 13.2% ±4.2 pts | 4.6% |
| Built 2020 or later | 0.1% ±0.2 pts | 0.3% |
| Built 2010 to 2019 | 5.9% ±2.0 pts | 4.5% |
| Built 1939 or earlier | 22.5% ±5.2 pts | 24.3% |
| Households with no vehicle | 2.5% ±1.4 pts | 9.9% |
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 121 get to work?
80.0% of Census Tract 121's workers drive alone and 8.6% work from home. The average trip to work takes 28.6 minutes. The unemployment rate in 2020-2024 averaged 4.9%.
| Measure | Tract 121 | Erie County |
|---|---|---|
| In the labor force (age 16+) | 64.4% ±3.7 pts | 58.9% |
| Unemployment rate | 4.9% ±2.6 pts | 5.4% |
| Drove alone to work | 80.0% ±4.9 pts | 75.4% |
| Carpooled | 8.9% ±3.9 pts | 9.1% |
| Public transportation | 0.0% ±0.9 pts | 0.9% |
| Walked | 2.2% ±1.4 pts | 3.5% |
| Worked from home | 8.6% ±3.0 pts | 8.9% |
| Mean travel time to work | 28.6 min ±3.4 | 19.6 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 121 compare with the other tracts in Erie County?
Among Erie County's tracts with a reliable estimate, Census Tract 121 ranks as shown below (1 = highest).
| Measure | In Erie County |
|---|---|
| Population | 2nd of 73 |
| Residents per square mile | 66th of 73 |
| Median household income | 19th of 71 |
| Per capita income | 24th of 73 |
| Median home value | 24th of 68 |
| Median gross rent | 50th of 69 |
| Poverty rate | 40th of 61 |
| Bachelor's degree or higher | 55th of 67 |
| Median age | 21st of 73 |
| Owner-occupied share | 22nd of 70 |
The tracts next to it on Erie County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 101.04 | 16th | $81,923±$7,700 · within the margin of this tract |
| Tract 120.01 | 17th | $80,929±$7,234 · within the margin of this tract |
| Tract 101.01 | 18th | $76,296±$8,526 · within the margin of this tract |
| Tract 121 | 19th | $75,734±$6,863 |
| Tract 107 | 20th | $75,250±$13,812 · within the margin of this tract |
| Tract 114 | 21st | $74,548±$8,737 · within the margin of this tract |
| Tract 112.02 | 22nd | $73,553±$6,154 · 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 121?
2 of the 18 figures for Census Tract 121 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