Census tract · Baltimore County
Census Tract 4085.05, Baltimore County, Maryland
Census Tract 4085.05, GEOID 24005408505, in Baltimore County, Maryland, entirely within Timonium. 3,708 residents in the ACS 2020-2024 5-year estimates (±260); the 2020 Census counted 3,973.
Residents, 2020-2024
3,708
±260 (90% margin)
2020 Census count: 3,973
Median household income
$109,387
±$26,527 (90% margin)
Baltimore County: $91,768
Median home value
$507,600
±$42,981 (90% margin)
Baltimore County: $349,300
Median gross rent
$1,814
±$123 (90% margin)
Baltimore County: $1,627
Where is Census Tract 4085.05?
Census Tract 4085.05 is one of 219 census tracts in Baltimore County, Maryland. It covers 1.57 square miles of land, 2,534 residents per square mile in 2020. Its GEOID, 24005408505, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Timonium | 100% |
8 census tracts border Census Tract 4085.05: Tract 4084 ($98,542), Tract 4085.02 ($121,250), Tract 4085.03 ($89,661), Tract 4085.06 ($59,322), Tract 4085.07 ($53,858), Tract 4086.01 ($134,313), Tract 4087.03 ($117,443) and Tract 4088 ($93,466). 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 4085.05?
The 2020-2024 American Community Survey puts Census Tract 4085.05's population at 3,708 (±260) in 1,456 households; the 2020 Census counted 3,973 residents and 1,611 housing units.
| Measure | Tract 4085.05 | Timonium |
|---|---|---|
| Total population | 3,708±260 | 10,304 |
| Households | 1,456±92 | 3,889 |
| Average household size | 2.54±0.17 | 2.51 |
| Housing units | 1,468±90 | 4,136 |
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 4085.05?
The median resident of Census Tract 4085.05 is 40.6 years old; 24.8% are under 18 and 17.9% are 65 or older. The largest group is non-Hispanic white residents at 68.6%, then non-Hispanic Asian residents at 11.8%. 15.0% of residents were born outside the United States.
| Measure | Tract 4085.05 | Timonium |
|---|---|---|
| Median age | 40.6±3.8 | 46.8 |
| Under 18 years | 24.8%±3.1 pts | 20.5% |
| 65 years and over | 17.9%±3.7 pts | 24.3% |
| Hispanic or Latino (any race) | 2.8%±2.3 pts | 3.1% |
| White alone, not Hispanic | 68.6%±7.2 pts | 75.4% |
| Black or African American alone, not Hispanic | 10.5%±5.3 pts | 6.8% |
| Asian alone, not Hispanic | 11.8%±3.3 pts | 9.8% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.1 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.1 pts | 0.1% |
| Two or more races, not Hispanic | 6.3%±3.1 pts | 4.7% |
| Some other race alone, not Hispanic | 0.0%±1.1 pts | 0.1% |
| Born outside the United States | 15.0%±4.6 pts | 11.9% |
| Speak a language other than English at home (age 5+) | 18.8%±7.0 pts | 15.0% |
| Civilian veterans (age 18+) | 3.2%±1.7 pts | 5.2% |
| With a disability | 11.0%±3.4 pts | 11.6% |
| No health insurance coverage | 4.5%±2.3 pts | 3.4% |
| High school graduate or higher (age 25+) | 96.5%±2.1 pts | 95.5% |
| Bachelor's degree or higher (age 25+) | 64.8%±5.2 pts | 65.0% |
| Graduate or professional degree (age 25+) | 37.9%±5.7 pts | 31.5% |
| Lived in the same house a year earlier | 86.6%±7.5 pts | 90.9% |
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 4085.05 earn?
Half of the 1,456 households in Census Tract 4085.05 earn less than $109,387 a year (±$26,527), against $91,768 across Baltimore County: 78th highest of the county's 213 tracts with a reliable estimate.
| Measure | Tract 4085.05 | Timonium |
|---|---|---|
| Median household income | $109,387±$26,527 | $119,863 |
| Mean household income | $141,410±$16,620 | $158,867 |
| Per capita income | $56,307±$6,578 | $61,232 |
| People below the poverty line | 5.8%±4.1 pts | 5.8% |
| Children under 18 below the poverty line | 5.4%±6.1 pts | 6.0% |
| Households receiving SNAP | 5.6%±3.9 pts | 4.2% |
| Households with a computer | 97.2%±2.4 pts | 96.0% |
| Households with a broadband subscription | 94.3%±4.1 pts | 91.6% |
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 4085.05?
Owners occupy 66.3% of Census Tract 4085.05's occupied homes and renters 33.7%. The median owner-occupied home is valued at $507,600 by its owner (±$42,981). The median renter pays $1,814 a month including utilities, and 33.9% of renters pay 35% or more of their income on rent.
| Measure | Tract 4085.05 | Timonium |
|---|---|---|
| Median home value (owner-occupied) | $507,600±$42,981 | $480,800 |
| Median gross rent | $1,814±$123 | $1,836 |
| Renters paying 35% or more of income on rent | 33.9%±15.2 pts | 46.3% |
| Median monthly owner costs, with a mortgage | $2,564±$177 | $2,542 |
| Owner-occupied homes | 66.3%±6.8 pts | 77.3% |
| Renter-occupied homes | 33.7%±6.8 pts | 22.7% |
| Housing units | 1,468±90 | 4,136 |
| Single-family detached homes | 66.8%±6.5 pts | 70.7% |
| Mobile homes | 1.8%±2.5 pts | 1.3% |
| Built 2020 or later | 1.8%±2.5 pts | 0.7% |
| Built 2010 to 2019 | 2.2%±1.7 pts | 2.8% |
| Built 1939 or earlier | 1.0%±1.7 pts | 2.1% |
| Households with no vehicle | 3.3%±2.8 pts | 6.0% |
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 4085.05 get to work?
66.1% of Census Tract 4085.05's workers drive alone and 18.2% work from home. The average trip to work takes 27.0 minutes. The unemployment rate in 2020-2024 averaged 5.9%.
| Measure | Tract 4085.05 | Timonium |
|---|---|---|
| In the labor force (age 16+) | 66.0%±5.4 pts | 58.0% |
| Unemployment rate | 5.9%±3.5 pts | 4.1% |
| Drove alone to work | 66.1%±9.7 pts | 63.4% |
| Carpooled | 13.5%±6.4 pts | 7.8% |
| Public transportation | 0.3%±0.6 pts | 0.6% |
| Walked | 1.8%±1.8 pts | 0.7% |
| Worked from home | 18.2%±6.6 pts | 27.2% |
| Mean travel time to work | 27.0 min±4.3 | 25.8 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 4085.05 compare with the other tracts in Baltimore County?
Among Baltimore County's tracts with a reliable estimate, Census Tract 4085.05 ranks as shown below (1 = highest).
| Measure | In Baltimore County | In Timonium |
|---|---|---|
| Population | 105th of 217 | 3rd of 3 |
| Residents per square mile | 157th of 219 | 2nd of 3 |
| Median household income | 78th of 213 | 3rd of 3 |
| Per capita income | 61st of 217 | 3rd of 3 |
| Median home value | 34th of 215 | 2nd of 3 |
| Median gross rent | 48th of 185 | 2nd of 3 |
| Bachelor's degree or higher | 37th of 214 | 3rd of 3 |
| Median age | 109th of 217 | 3rd of 3 |
| Owner-occupied share | 129th of 213 | 3rd of 3 |
The tracts next to it on Baltimore County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 4114.10 | 75th | $111,458±$29,187 · within the margin of this tract |
| Tract 4025.04 | 76th | $111,352±$21,799 · within the margin of this tract |
| Tract 4031 | 77th | $110,449±$9,191 · within the margin of this tract |
| Tract 4085.05 | 78th | $109,387±$26,527 |
| Tract 4907.03 | 79th | $108,654±$41,129 · within the margin of this tract |
| Tract 4903.02 | 80th | $108,157±$7,711 · within the margin of this tract |
| Tract 4036.01 | 81st | $107,841±$31,199 · 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 4085.05?
2 of the 18 figures for Census Tract 4085.05 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