Census tract · Ada County
Census Tract 102.31, Ada County, Idaho
Census Tract 102.31, GEOID 16001010231, in Ada County, Idaho, mostly within Eagle (67% of its census blocks). 2,508 residents in the ACS 2020-2024 5-year estimates (±310); the 2020 Census counted 2,552.
Residents, 2020-2024
2,508
±310 (90% margin)
2020 Census count: 2,552
Median household income
$149,375
±$22,155 (90% margin)
Ada County: $91,502
Median home value
$1,157,700
±$105,363 (90% margin)
Ada County: $512,300
Median gross rent
not published
Ada County: $1,577
Where is Census Tract 102.31?
Census Tract 102.31 is one of 129 census tracts in Ada County, Idaho. It covers 2.97 square miles of land, 859 residents per square mile in 2020. Its GEOID, 16001010231, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Eagle | 67% |
4 census tracts border Census Tract 102.31: Tract 102.24 ($177,936), Tract 102.29 ($132,000), Tract 102.30 ($117,885) and Tract 102.32 ($95,893). 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 102.31?
The 2020-2024 American Community Survey puts Census Tract 102.31's population at 2,508 (±310) in 834 households; the 2020 Census counted 2,552 residents and 845 housing units.
| Measure | Tract 102.31 | Eagle |
|---|---|---|
| Total population | 2,508±310 | 32,855 |
| Households | 834±119 | 12,812 |
| Average household size | 3.00±0.19 | 2.55 |
| Housing units | 834±119 | 13,550 |
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 102.31?
The median resident of Census Tract 102.31 is 45.7 years old; 23.7% are under 18 and 20.9% are 65 or older. The largest group is non-Hispanic white residents at 86.4%, then Hispanic or Latino residents (of any race) at 6.5%. 1.4% of residents were born outside the United States.
| Measure | Tract 102.31 | Eagle |
|---|---|---|
| Median age | 45.7±5.9 | 47.6 |
| Under 18 years | 23.7%±3.9 pts | 22.4% |
| 65 years and over | 20.9%±5.1 pts | 24.3% |
| Hispanic or Latino (any race) | 6.5%±4.5 pts | 7.8% |
| White alone, not Hispanic | 86.4%±6.9 pts | 84.9% |
| Black or African American alone, not Hispanic | 0.0%±1.4 pts | 0.5% |
| Asian alone, not Hispanic | 0.6%±0.6 pts | 1.8% |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±1.4 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±1.4 pts | 0.2% |
| Two or more races, not Hispanic | 1.8%±1.7 pts | 4.2% |
| Some other race alone, not Hispanic | 4.7%±6.2 pts | 0.5% |
| Born outside the United States | 1.4%±0.8 pts | 5.2% |
| Speak a language other than English at home (age 5+) | 3.1%±3.2 pts | 6.7% |
| Civilian veterans (age 18+) | 5.8%±2.2 pts | 10.1% |
| With a disability | 7.1%±3.1 pts | 9.9% |
| No health insurance coverage | 2.6%±2.3 pts | 3.9% |
| High school graduate or higher (age 25+) | 99.2%±1.0 pts | 96.6% |
| Bachelor's degree or higher (age 25+) | 58.7%±9.9 pts | 57.5% |
| Graduate or professional degree (age 25+) | 19.4%±6.3 pts | 19.2% |
| Lived in the same house a year earlier | 90.0%±5.5 pts | 83.6% |
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 102.31 earn?
Half of the 834 households in Census Tract 102.31 earn less than $149,375 a year (±$22,155), against $91,502 across Ada County: 7th highest of the county's 128 tracts with a reliable estimate.
| Measure | Tract 102.31 | Eagle |
|---|---|---|
| Median household income | $149,375±$22,155 | $122,894 |
| Mean household income | $226,907±$48,533 | $175,896 |
| Per capita income | $77,581±$15,058 | $69,666 |
| People below the poverty line | 6.8%±7.2 pts | 6.1% |
| Children under 18 below the poverty line | 10.6%±15.2 pts | 5.5% |
| Households receiving SNAP | 0.0%±4.1 pts | 2.6% |
| Households with a computer | 96.5%±3.3 pts | 97.7% |
| Households with a broadband subscription | 94.6%±4.5 pts | 96.1% |
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 102.31?
Owners occupy 97.5% of Census Tract 102.31's occupied homes and renters 2.5%. The median owner-occupied home is valued at $1,157,700 by its owner (±$105,363).
| Measure | Tract 102.31 | Eagle |
|---|---|---|
| Median home value (owner-occupied) | $1,157,700±$105,363 | $772,900 |
| Renters paying 35% or more of income on rent | 57.1%±57.1 pts | 46.7% |
| Median monthly owner costs, with a mortgage | $3,134±$492 | $2,460 |
| Owner-occupied homes | 97.5%±2.7 pts | 84.1% |
| Renter-occupied homes | 2.5%±2.7 pts | 15.9% |
| Housing units | 834±119 | 13,550 |
| Single-family detached homes | 96.9%±2.7 pts | 86.0% |
| Mobile homes | 1.0%±1.5 pts | 2.1% |
| Built 2020 or later | 3.8%±3.3 pts | 10.3% |
| Built 2010 to 2019 | 41.8%±10.1 pts | 32.6% |
| Built 1939 or earlier | 0.0%±4.1 pts | 2.5% |
| Households with no vehicle | 0.7%±1.4 pts | 3.3% |
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 102.31 get to work?
52.7% of Census Tract 102.31's workers drive alone and 29.9% work from home. The average trip to work takes 24.3 minutes.
| Measure | Tract 102.31 | Eagle |
|---|---|---|
| In the labor force (age 16+) | 57.0%±7.9 pts | 56.0% |
| Unemployment rate | 0.6%±1.3 pts | 2.0% |
| Drove alone to work | 52.7%±8.8 pts | 61.0% |
| Carpooled | 10.2%±5.6 pts | 5.0% |
| Public transportation | 0.0%±3.2 pts | 0.7% |
| Walked | 6.0%±6.8 pts | 2.8% |
| Worked from home | 29.9%±10.9 pts | 28.6% |
| Mean travel time to work | 24.3 min±4.4 | 23.7 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 102.31 compare with the other tracts in Ada County?
Among Ada County's tracts with a reliable estimate, Census Tract 102.31 ranks as shown below (1 = highest).
| Measure | In Ada County | In Eagle |
|---|---|---|
| Population | 113th of 129 | 8th of 8 |
| Residents per square mile | 111th of 129 | 6th of 8 |
| Median household income | 7th of 128 | 3rd of 8 |
| Per capita income | 12th of 129 | 3rd of 8 |
| Median home value | 1st of 127 | 1st of 8 |
| Bachelor's degree or higher | 22nd of 129 | 4th of 8 |
| Median age | 26th of 129 | 5th of 8 |
| Owner-occupied share | 1st of 127 | 1st of 8 |
The tracts next to it on Ada County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 7.04 | 4th | $165,469±$58,220 · within the margin of this tract |
| Tract 101.01 | 5th | $162,932±$21,264 · within the margin of this tract |
| Tract 103.53 | 6th | $160,750±$29,341 · within the margin of this tract |
| Tract 102.31 | 7th | $149,375±$22,155 |
| Tract 103.55 | 8th | $148,611±$17,184 · within the margin of this tract |
| Tract 103.41 | 9th | $147,447±$17,677 · within the margin of this tract |
| Tract 8.05 | 10th | $146,575±$11,961 · 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 102.31?
4 of the 17 figures for Census Tract 102.31 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