Census tract · Honolulu County
Census Tract 89.18, Honolulu County, Hawaii
Census Tract 89.18, GEOID 15003008918, in Honolulu County, Hawaii, mostly within Mililani Town (86% of its census blocks). 5,328 residents in the ACS 2020-2024 5-year estimates (±835); the 2020 Census counted 5,529.
Residents, 2020-2024
5,328
±835 (90% margin)
2020 Census count: 5,529
Median household income
$121,530
±$11,262 (90% margin)
Honolulu County: $106,195
Median home value
$885,200
±$85,432 (90% margin)
Honolulu County: $897,500
Median gross rent
$2,448
±$342 (90% margin)
Honolulu County: $2,083
Where is Census Tract 89.18?
Census Tract 89.18 is one of 330 census tracts in Honolulu County, Hawaii. It covers 0.91 square miles of land, 6,103 residents per square mile in 2020. Its GEOID, 15003008918, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Mililani Town | 86% |
5 census tracts border Census Tract 89.18: Tract 89.06 ($119,804), Tract 89.09 ($132,083), Tract 89.17 ($137,448), Tract 89.33 ($145,543) and Tract 89.45 ($79,783). 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 89.18?
The 2020-2024 American Community Survey puts Census Tract 89.18's population at 5,328 (±835) in 1,792 households; the 2020 Census counted 5,529 residents and 1,838 housing units.
| Measure | Tract 89.18 | Mililani Town |
|---|---|---|
| Total population | 5,328 ±835 | 27,668 |
| Households | 1,792 ±212 | 9,691 |
| Average household size | 2.97 ±0.25 | 2.85 |
| Housing units | 1,828 ±219 | 9,880 |
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 89.18?
The median resident of Census Tract 89.18 is 39.7 years old; 21.4% are under 18 and 18.9% are 65 or older. The largest group is non-Hispanic Asian residents at 45.2%, then non-Hispanic residents of two or more races at 29.5%. 10.2% of residents were born outside the United States.
| Measure | Tract 89.18 | Mililani Town |
|---|---|---|
| Median age | 39.7 ±6.3 | 45.5 |
| Under 18 years | 21.4% ±4.5 pts | 19.8% |
| 65 years and over | 18.9% ±4.9 pts | 26.1% |
| Hispanic or Latino (any race) | 6.0% ±2.5 pts | 11.4% |
| White alone, not Hispanic | 13.1% ±3.5 pts | 9.7% |
| Black or African American alone, not Hispanic | 2.6% ±2.0 pts | 1.6% |
| Asian alone, not Hispanic | 45.2% ±9.1 pts | 45.1% |
| American Indian and Alaska Native alone, not Hispanic | 0.1% ±0.2 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 3.2% ±2.8 pts | 4.3% |
| Two or more races, not Hispanic | 29.5% ±6.1 pts | 27.3% |
| Some other race alone, not Hispanic | 0.5% ±0.5 pts | 0.6% |
| Born outside the United States | 10.2% ±3.4 pts | 10.1% |
| Speak a language other than English at home (age 5+) | 10.3% ±3.1 pts | 11.4% |
| Civilian veterans (age 18+) | 15.7% ±4.0 pts | 12.9% |
| With a disability | 8.8% ±2.6 pts | 12.9% |
| No health insurance coverage | 1.6% ±0.9 pts | 1.3% |
| High school graduate or higher (age 25+) | 97.5% ±1.6 pts | 95.6% |
| Bachelor's degree or higher (age 25+) | 44.5% ±7.8 pts | 43.8% |
| Graduate or professional degree (age 25+) | 14.9% ±4.3 pts | 15.2% |
| Lived in the same house a year earlier | 90.7% ±5.2 pts | 94.0% |
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 89.18 earn?
Half of the 1,792 households in Census Tract 89.18 earn less than $121,530 a year (±$11,262), against $106,195 across Honolulu County: 122nd highest of the county's 312 tracts with a reliable estimate. 3.4% of residents live below the poverty line.
| Measure | Tract 89.18 | Mililani Town |
|---|---|---|
| Median household income | $121,530 ±$11,262 | $127,363 |
| Mean household income | $146,265 ±$21,232 | $148,583 |
| Per capita income | $51,636 ±$6,860 | $52,408 |
| People below the poverty line | 3.4% ±2.2 pts | 3.2% |
| Children under 18 below the poverty line | 5.9% ±5.6 pts | 4.2% |
| Households receiving SNAP | 3.5% ±2.3 pts | 5.0% |
| Households with a computer | 98.8% ±1.4 pts | 98.0% |
| Households with a broadband subscription | 97.4% ±2.0 pts | 96.7% |
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 89.18?
Owners occupy 85.5% of Census Tract 89.18's occupied homes and renters 14.5%. The median owner-occupied home is valued at $885,200 by its owner (±$85,432). The median renter pays $2,448 a month including utilities.
| Measure | Tract 89.18 | Mililani Town |
|---|---|---|
| Median home value (owner-occupied) | $885,200 ±$85,432 | $923,900 |
| Median gross rent | $2,448 ±$342 | $2,384 |
| Renters paying 35% or more of income on rent | 21.7% ±16.2 pts | 33.2% |
| Median monthly owner costs, with a mortgage | $3,033 ±$358 | $3,027 |
| Owner-occupied homes | 85.5% ±5.4 pts | 81.2% |
| Renter-occupied homes | 14.5% ±5.4 pts | 18.8% |
| Housing units | 1,828 ±219 | 9,880 |
| Single-family detached homes | 58.6% ±6.9 pts | 65.3% |
| Mobile homes | 0.0% ±1.8 pts | 0.1% |
| Built 2020 or later | 0.0% ±1.8 pts | 0.5% |
| Built 2010 to 2019 | 0.4% ±0.6 pts | 1.1% |
| Built 1939 or earlier | 0.0% ±1.8 pts | 0.2% |
| Households with no vehicle | 1.7% ±1.6 pts | 3.0% |
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 89.18 get to work?
78.1% of Census Tract 89.18's workers drive alone and 4.8% work from home. The average trip to work takes 28.1 minutes. The unemployment rate in 2020-2024 averaged 3.9%.
| Measure | Tract 89.18 | Mililani Town |
|---|---|---|
| In the labor force (age 16+) | 68.1% ±5.5 pts | 62.2% |
| Unemployment rate | 3.9% ±2.0 pts | 3.7% |
| Drove alone to work | 78.1% ±6.7 pts | 77.7% |
| Carpooled | 14.1% ±6.4 pts | 11.7% |
| Public transportation | 0.0% ±1.2 pts | 1.4% |
| Walked | 0.7% ±0.9 pts | 0.9% |
| Worked from home | 4.8% ±2.1 pts | 7.7% |
| Mean travel time to work | 28.1 min ±1.8 | 29.9 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 89.18 compare with the other tracts in Honolulu County?
Among Honolulu County's tracts with a reliable estimate, Census Tract 89.18 ranks as shown below (1 = highest).
| Measure | In Honolulu County | In Mililani Town |
|---|---|---|
| Population | 29th of 319 | 1st of 8 |
| Residents per square mile | 192nd of 329 | 6th of 8 |
| Median household income | 122nd of 312 | 6th of 8 |
| Per capita income | 114th of 317 | 5th of 8 |
| Median home value | 139th of 284 | 5th of 8 |
| Median gross rent | 114th of 298 | 3rd of 7 |
| Poverty rate | 174th of 184 | 1st of 2 |
| Bachelor's degree or higher | 107th of 313 | 4th of 8 |
| Median age | 204th of 319 | 7th of 8 |
| Owner-occupied share | 44th of 287 | 4th of 8 |
The tracts next to it on Honolulu County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 89.52 | 119th | $122,150±$22,590 · within the margin of this tract |
| Tract 8 | 120th | $122,147±$30,234 · within the margin of this tract |
| Tract 115 | 121st | $121,959±$12,966 · within the margin of this tract |
| Tract 89.18 | 122nd | $121,530±$11,262 |
| Tract 63.01 | 123rd | $121,500±$9,610 · within the margin of this tract |
| Tract 86.33 | 124th | $120,795±$17,195 · within the margin of this tract |
| Tract 36.06 | 125th | $120,670±$23,555 · 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 89.18?
1 of the 18 figures for Census Tract 89.18 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