Census tract · Monmouth County
Census Tract 8121, Monmouth County, New Jersey
Census Tract 8121, GEOID 34025812100, in Monmouth County, New Jersey, mostly within Middletown Township (57% of its census blocks). 1,727 residents in the ACS 2020-2024 5-year estimates (±280); the 2020 Census counted 1,455.
Residents, 2020-2024
1,727
±280 (90% margin)
2020 Census count: 1,455
Median household income
$143,056
±$29,562 (90% margin)
Monmouth County: $124,845
Median home value
$821,100
±$82,571 (90% margin)
Monmouth County: $606,100
Median gross rent
$2,463
±$381 (90% margin)
Monmouth County: $1,827
Where is Census Tract 8121?
Census Tract 8121 is one of 155 census tracts in Monmouth County, New Jersey. It covers 3.69 square miles of land, 395 residents per square mile in 2020. Its GEOID, 34025812100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Middletown Township | 57% |
| Sea Bright | 43% |
6 census tracts border Census Tract 8121: Tract 8001.01 ($90,072), Tract 8001.02 ($93,833), Tract 8009 ($134,307), Tract 8038 ($250,000 or more), Tract 8039 ($250,000 or more) and Tract 8041 ($150,188). 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 8121?
The 2020-2024 American Community Survey puts Census Tract 8121's population at 1,727 (±280) in 946 households; the 2020 Census counted 1,455 residents and 1,208 housing units.
| Measure | Tract 8121 | Middletown Township |
|---|---|---|
| Total population | 1,727±280 | 66,883 |
| Households | 946±128 | 25,211 |
| Average household size | 1.82±0.17 | 2.65 |
| Housing units | 1,162±132 | 25,652 |
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 8121?
The median resident of Census Tract 8121 is 55.2 years old. The largest group is non-Hispanic white residents at 94.8%, then Hispanic or Latino residents (of any race) at 2.7%.
| Measure | Tract 8121 | Middletown Township |
|---|---|---|
| Median age | 55.2±2.4 | 44.1 |
| Under 18 years | 9.1%±6.4 pts | 22.3% |
| 65 years and over | 27.9%±8.3 pts | 17.6% |
| Hispanic or Latino (any race) | 2.7%±2.9 pts | 8.9% |
| White alone, not Hispanic | 94.8%±3.5 pts | 83.2% |
| Black or African American alone, not Hispanic | 0.0%±2.6 pts | 1.5% |
| Asian alone, not Hispanic | 0.8%±1.2 pts | 2.5% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±2.6 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±2.6 pts | 0.0% |
| Two or more races, not Hispanic | 1.2%±1.0 pts | 3.5% |
| Some other race alone, not Hispanic | 0.6%±0.8 pts | 0.4% |
| Born outside the United States | 3.0%±2.9 pts | 7.0% |
| Speak a language other than English at home (age 5+) | 2.5%±2.9 pts | 9.5% |
| Civilian veterans (age 18+) | 5.9%±5.5 pts | 3.6% |
| With a disability | 14.9%±10.7 pts | 10.0% |
| No health insurance coverage | 2.6%±1.8 pts | 2.5% |
| High school graduate or higher (age 25+) | 99.5%±0.9 pts | 95.9% |
| Bachelor's degree or higher (age 25+) | 61.7%±10.7 pts | 51.5% |
| Graduate or professional degree (age 25+) | 22.0%±7.6 pts | 18.0% |
| Lived in the same house a year earlier | 88.1%±6.5 pts | 94.3% |
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 8121 earn?
Half of the 946 households in Census Tract 8121 earn less than $143,056 a year (±$29,562), against $124,845 across Monmouth County: 57th highest of the county's 154 tracts with a reliable estimate.
| Measure | Tract 8121 | Middletown Township |
|---|---|---|
| Median household income | $143,056±$29,562 | $141,810 |
| Mean household income | $208,503±$44,705 | $184,817 |
| Per capita income | $114,887±$19,719 | $70,387 |
| People below the poverty line | 6.9%±5.9 pts | 4.2% |
| Children under 18 below the poverty line | 0.0%±24.4 pts | 3.1% |
| Households receiving SNAP | 5.9%±9.3 pts | 3.9% |
| Households with a computer | 97.9%±2.7 pts | 97.0% |
| Households with a broadband subscription | 93.8%±3.9 pts | 95.6% |
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 8121?
Owners occupy 69.6% of Census Tract 8121's occupied homes and renters 30.4%. The median owner-occupied home is valued at $821,100 by its owner (±$82,571). The median renter pays $2,463 a month including utilities, and 25.0% of renters pay 35% or more of their income on rent.
| Measure | Tract 8121 | Middletown Township |
|---|---|---|
| Median home value (owner-occupied) | $821,100±$82,571 | $608,300 |
| Median gross rent | $2,463±$381 | $1,532 |
| Renters paying 35% or more of income on rent | 25.0%±11.2 pts | 46.0% |
| Median monthly owner costs, with a mortgage | $3,446±$411 | $3,107 |
| Owner-occupied homes | 69.6%±8.5 pts | 85.7% |
| Renter-occupied homes | 30.4%±8.5 pts | 14.3% |
| Housing units | 1,162±132 | 25,652 |
| Single-family detached homes | 26.4%±7.3 pts | 77.6% |
| Mobile homes | 0.0%±3.8 pts | 0.2% |
| Built 2020 or later | 1.5%±1.6 pts | 1.1% |
| Built 2010 to 2019 | 6.5%±4.0 pts | 4.7% |
| Built 1939 or earlier | 12.7%±5.1 pts | 10.2% |
| Households with no vehicle | 4.1%±3.1 pts | 4.2% |
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 8121 get to work?
60.2% of Census Tract 8121's workers drive alone and 17.9% work from home. The average trip to work takes 38.3 minutes.
| Measure | Tract 8121 | Middletown Township |
|---|---|---|
| In the labor force (age 16+) | 66.0%±8.4 pts | 66.9% |
| Unemployment rate | 6.0%±4.1 pts | 5.8% |
| Drove alone to work | 60.2%±10.6 pts | 69.4% |
| Carpooled | 9.2%±8.4 pts | 3.9% |
| Public transportation | 7.4%±4.3 pts | 7.3% |
| Walked | 3.8%±4.1 pts | 0.7% |
| Worked from home | 17.9%±6.2 pts | 18.2% |
| Mean travel time to work | 38.3 min±7.9 | 34.9 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 8121 compare with the other tracts in Monmouth County?
Among Monmouth County's tracts with a reliable estimate, Census Tract 8121 ranks as shown below (1 = highest).
| Measure | In Monmouth County |
|---|---|
| Population | 146th of 154 |
| Residents per square mile | 146th of 154 |
| Median household income | 57th of 154 |
| Per capita income | 8th of 154 |
| Median home value | 27th of 151 |
| Median gross rent | 31st of 123 |
| Bachelor's degree or higher | 40th of 153 |
| Median age | 12th of 154 |
| Owner-occupied share | 102nd of 152 |
The tracts next to it on Monmouth County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 8115.01 | 54th | $145,775±$26,813 · within the margin of this tract |
| Tract 8053 | 55th | $143,889±$41,142 · within the margin of this tract |
| Tract 8080.01 | 56th | $143,375±$11,805 · within the margin of this tract |
| Tract 8121 | 57th | $143,056±$29,562 |
| Tract 8006.02 | 58th | $141,573±$22,344 · within the margin of this tract |
| Tract 8010 | 59th | $141,000±$33,809 · within the margin of this tract |
| Tract 8064 | 60th | $139,938±$17,456 · 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 8121?
4 of the 18 figures for Census Tract 8121 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