Census tract · Hillsborough County
Census Tract 121.08, Hillsborough County, Florida
Census Tract 121.08, GEOID 12057012108, in Hillsborough County, Florida, mostly within Seffner (93% of its census blocks). 4,342 residents in the ACS 2020-2024 5-year estimates (±834); the 2020 Census counted 3,487.
Residents, 2020-2024
4,342
±834 (90% margin)
2020 Census count: 3,487
Median household income
$72,635
±$17,735 (90% margin)
Hillsborough County: $79,540
Median home value
$307,800
±$30,672 (90% margin)
Hillsborough County: $371,500
Median gross rent
$1,373
±$232 (90% margin)
Hillsborough County: $1,667
Where is Census Tract 121.08?
Census Tract 121.08 is one of 335 census tracts in Hillsborough County, Florida. It covers 1.04 square miles of land, 3,366 residents per square mile in 2020. Its GEOID, 12057012108, names it uniquely (how tract numbers and GEOIDs work).
4 census tracts border Census Tract 121.08: Tract 103.04 ($83,780), Tract 121.06 ($91,271), Tract 121.07 ($54,684) and Tract 122.07 ($85,402). 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 121.08?
The 2020-2024 American Community Survey puts Census Tract 121.08's population at 4,342 (±834) in 1,266 households; the 2020 Census counted 3,487 residents and 1,295 housing units.
| Measure | Tract 121.08 | Seffner |
|---|---|---|
| Total population | 4,342±834 | 8,885 |
| Households | 1,266±116 | 3,036 |
| Average household size | 3.43±0.52 | 2.91 |
| Housing units | 1,279±111 | 3,172 |
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 121.08?
The median resident of Census Tract 121.08 is 31.9 years old; 33.1% are under 18 and 13.8% are 65 or older. The largest group is non-Hispanic white residents at 41.5%, then Hispanic or Latino residents (of any race) at 36.3%. 15.6% of residents were born outside the United States.
| Measure | Tract 121.08 | Seffner |
|---|---|---|
| Median age | 31.9±2.7 | 38.8 |
| Under 18 years | 33.1%±6.1 pts | 25.8% |
| 65 years and over | 13.8%±4.2 pts | 16.1% |
| Hispanic or Latino (any race) | 36.3%±14.8 pts | 25.6% |
| White alone, not Hispanic | 41.5%±13.2 pts | 52.5% |
| Black or African American alone, not Hispanic | 18.7%±6.8 pts | 17.5% |
| Asian alone, not Hispanic | 2.8%±3.0 pts | 1.8% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.2 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.2 pts | 0.0% |
| Two or more races, not Hispanic | 0.6%±0.8 pts | 2.4% |
| Some other race alone, not Hispanic | 0.0%±1.2 pts | 0.3% |
| Born outside the United States | 15.6%±5.9 pts | 11.3% |
| Speak a language other than English at home (age 5+) | 33.7%±14.0 pts | 22.3% |
| Civilian veterans (age 18+) | 3.8%±2.4 pts | 7.6% |
| With a disability | 11.4%±3.7 pts | 13.5% |
| No health insurance coverage | 10.7%±6.1 pts | 8.1% |
| High school graduate or higher (age 25+) | 90.3%±6.7 pts | 92.8% |
| Bachelor's degree or higher (age 25+) | 30.3%±7.9 pts | 32.3% |
| Graduate or professional degree (age 25+) | 6.5%±3.7 pts | 11.1% |
| Lived in the same house a year earlier | 97.7%±2.4 pts | 94.4% |
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 121.08 earn?
Half of the 1,266 households in Census Tract 121.08 earn less than $72,635 a year (±$17,735), against $79,540 across Hillsborough County: 172nd highest of the county's 320 tracts with a reliable estimate. 20.7% of residents live below the poverty line.
| Measure | Tract 121.08 | Seffner |
|---|---|---|
| Median household income | $72,635±$17,735 | $93,333 |
| Mean household income | $103,740±$17,398 | $131,183 |
| Per capita income | $31,084±$6,685 | $45,078 |
| People below the poverty line | 20.7%±11.7 pts | 11.7% |
| Children under 18 below the poverty line | 28.7%±19.6 pts | 18.3% |
| Households receiving SNAP | 19.7%±7.0 pts | 9.7% |
| Households with a computer | 94.8%±5.8 pts | 94.9% |
| Households with a broadband subscription | 93.3%±5.8 pts | 90.4% |
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 121.08?
Owners occupy 82.5% of Census Tract 121.08's occupied homes and renters 17.5%. The median owner-occupied home is valued at $307,800 by its owner (±$30,672). The median renter pays $1,373 a month including utilities, and 39.9% of renters pay 35% or more of their income on rent.
| Measure | Tract 121.08 | Seffner |
|---|---|---|
| Median home value (owner-occupied) | $307,800±$30,672 | $344,100 |
| Median gross rent | $1,373±$232 | $1,818 |
| Renters paying 35% or more of income on rent | 39.9%±25.8 pts | 45.1% |
| Median monthly owner costs, with a mortgage | $1,635±$115 | $1,768 |
| Owner-occupied homes | 82.5%±6.8 pts | 83.5% |
| Renter-occupied homes | 17.5%±6.8 pts | 16.5% |
| Housing units | 1,279±111 | 3,172 |
| Single-family detached homes | 77.0%±8.3 pts | 82.5% |
| Mobile homes | 19.9%±7.9 pts | 9.0% |
| Built 2020 or later | 0.0%±4.0 pts | 0.2% |
| Built 2010 to 2019 | 16.3%±7.5 pts | 8.9% |
| Built 1939 or earlier | 0.0%±4.0 pts | 1.3% |
| Households with no vehicle | 2.5%±2.9 pts | 2.3% |
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 121.08 get to work?
68.4% of Census Tract 121.08's workers drive alone and 9.4% work from home. The average trip to work takes 26.3 minutes.
| Measure | Tract 121.08 | Seffner |
|---|---|---|
| In the labor force (age 16+) | 64.3%±6.4 pts | 66.6% |
| Unemployment rate | 1.8%±1.7 pts | 4.0% |
| Drove alone to work | 68.4%±8.3 pts | 65.9% |
| Carpooled | 16.0%±8.4 pts | 12.0% |
| Public transportation | 0.7%±1.3 pts | 0.3% |
| Walked | 2.4%±2.4 pts | 1.8% |
| Worked from home | 9.4%±4.8 pts | 18.1% |
| Mean travel time to work | 26.3 min±4.7 | 25.0 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 121.08 compare with the other tracts in Hillsborough County?
Among Hillsborough County's tracts with a reliable estimate, Census Tract 121.08 ranks as shown below (1 = highest).
| Measure | In Hillsborough County |
|---|---|
| Population | 153rd of 326 |
| Residents per square mile | 172nd of 333 |
| Median household income | 172nd of 320 |
| Per capita income | 225th of 327 |
| Median home value | 204th of 308 |
| Median gross rent | 240th of 312 |
| Poverty rate | 63rd of 227 |
| Bachelor's degree or higher | 192nd of 315 |
| Median age | 280th of 327 |
| Owner-occupied share | 68th of 310 |
The tracts next to it on Hillsborough County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 127.01 | 169th | $73,277±$18,964 · within the margin of this tract |
| Tract 113.03 | 170th | $73,200±$12,085 · within the margin of this tract |
| Tract 123.03 | 171st | $72,884±$17,768 · within the margin of this tract |
| Tract 121.08 | 172nd | $72,635±$17,735 |
| Tract 116.11 | 173rd | $72,304±$19,482 · within the margin of this tract |
| Tract 140.12 | 174th | $72,209±$8,096 · within the margin of this tract |
| Tract 130.02 | 175th | $72,096±$15,502 · 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 121.08?
1 of the 18 figures for Census Tract 121.08 on this page carries a coefficient of variation over 40% and is 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