Census tract · Johnson County
Census Tract 101, Johnson County, Iowa
Census Tract 101, GEOID 19103010100, in Johnson County, Iowa, partly within Solon, Iowa City and West Branch. 7,891 residents in the ACS 2020-2024 5-year estimates (±505); the 2020 Census counted 8,022.
Residents, 2020-2024
7,891
±505 (90% margin)
2020 Census count: 8,022
Median household income
$134,571
±$11,543 (90% margin)
Johnson County: $74,935
Median home value
$406,200
±$31,187 (90% margin)
Johnson County: $308,600
Median gross rent
$1,170
±$194 (90% margin)
Johnson County: $1,122
Where is Census Tract 101?
Census Tract 101 is one of 36 census tracts in Johnson County, Iowa. It covers 119.81 square miles of land, 67 residents per square mile in 2020. Its GEOID, 19103010100, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Solon | 25% |
| Iowa City | 1% |
| West Branch | 1% |
9 census tracts border Census Tract 101: Tract 4502 in Cedar County ($80,028), Tract 4505 in Cedar County ($91,131), Tract 1 ($95,377), Tract 102 ($115,385), Tract 103.07 ($102,969), Tract 103.08 ($148,009), Tract 105.02 ($83,194), Tract 107 in Linn County ($120,462) and Tract 108.01 in Linn County ($102,813). 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 101?
The 2020-2024 American Community Survey puts Census Tract 101's population at 7,891 (±505) in 3,052 households; the 2020 Census counted 8,022 residents and 3,154 housing units.
| Measure | Tract 101 | Johnson County |
|---|---|---|
| Total population | 7,891 ±505 | 156,639 |
| Households | 3,052 ±206 | 63,341 |
| Average household size | 2.55 ±0.13 | 2.34 |
| Housing units | 3,253 ±249 | 68,217 |
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 101?
The median resident of Census Tract 101 is 45.8 years old; 25.1% are under 18 and 21.5% are 65 or older. The largest group is non-Hispanic white residents at 97.0%, then non-Hispanic residents of two or more races at 1.7%.
| Measure | Tract 101 | Johnson County |
|---|---|---|
| Median age | 45.8 ±2.3 | 31.0 |
| Under 18 years | 25.1% ±2.4 pts | 19.3% |
| 65 years and over | 21.5% ±2.7 pts | 13.3% |
| Hispanic or Latino (any race) | 1.0% ±0.9 pts | 6.7% |
| White alone, not Hispanic | 97.0% ±1.9 pts | 74.8% |
| Black or African American alone, not Hispanic | 0.0% ±0.3 pts | 7.6% |
| Asian alone, not Hispanic | 0.1% ±0.2 pts | 5.6% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.3 pts | 0.1% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.3 pts | 0.0% |
| Two or more races, not Hispanic | 1.7% ±1.5 pts | 4.6% |
| Some other race alone, not Hispanic | 0.2% ±0.3 pts | 0.5% |
| Born outside the United States | 0.9% ±0.8 pts | 9.8% |
| Speak a language other than English at home (age 5+) | 1.9% ±1.1 pts | 14.7% |
| Civilian veterans (age 18+) | 4.1% ±1.7 pts | 3.9% |
| With a disability | 8.1% ±2.5 pts | 9.9% |
| No health insurance coverage | 0.3% ±0.3 pts | 4.7% |
| High school graduate or higher (age 25+) | 98.0% ±1.1 pts | 96.3% |
| Bachelor's degree or higher (age 25+) | 52.9% ±6.0 pts | 55.2% |
| Graduate or professional degree (age 25+) | 19.6% ±3.5 pts | 24.1% |
| Lived in the same house a year earlier | 95.6% ±2.1 pts | 77.5% |
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 101 earn?
Half of the 3,052 households in Census Tract 101 earn less than $134,571 a year (±$11,543), against $74,935 across Johnson County: 2nd highest of the county's 36 tracts with a reliable estimate.
| Measure | Tract 101 | Johnson County |
|---|---|---|
| Median household income | $134,571 ±$11,543 | $74,935 |
| Mean household income | $154,282 ±$13,719 | $108,874 |
| Per capita income | $59,700 ±$4,570 | $45,136 |
| People below the poverty line | 2.5% ±2.2 pts | 17.1% |
| Children under 18 below the poverty line | 1.8% ±2.1 pts | 11.1% |
| Households receiving SNAP | 2.7% ±2.5 pts | 6.0% |
| Households with a computer | 93.3% ±5.0 pts | 97.0% |
| Households with a broadband subscription | 93.1% ±5.1 pts | 89.2% |
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 101?
Owners occupy 87.4% of Census Tract 101's occupied homes and renters 12.6%. The median owner-occupied home is valued at $406,200 by its owner (±$31,187). The median renter pays $1,170 a month including utilities, and 47.8% of renters pay 35% or more of their income on rent.
| Measure | Tract 101 | Johnson County |
|---|---|---|
| Median home value (owner-occupied) | $406,200 ±$31,187 | $308,600 |
| Median gross rent | $1,170 ±$194 | $1,122 |
| Renters paying 35% or more of income on rent | 47.8% ±16.9 pts | 46.3% |
| Median monthly owner costs, with a mortgage | $2,330 ±$130 | $1,948 |
| Owner-occupied homes | 87.4% ±5.3 pts | 59.4% |
| Renter-occupied homes | 12.6% ±5.3 pts | 40.6% |
| Housing units | 3,253 ±249 | 68,217 |
| Single-family detached homes | 85.6% ±3.1 pts | 48.0% |
| Mobile homes | 0.0% ±0.8 pts | 3.8% |
| Built 2020 or later | 3.2% ±2.1 pts | 2.7% |
| Built 2010 to 2019 | 14.6% ±4.4 pts | 18.7% |
| Built 1939 or earlier | 14.3% ±6.1 pts | 9.4% |
| Households with no vehicle | 2.8% ±1.6 pts | 7.1% |
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 101 get to work?
78.5% of Census Tract 101's workers drive alone and 12.9% work from home. The average trip to work takes 21.3 minutes.
| Measure | Tract 101 | Johnson County |
|---|---|---|
| In the labor force (age 16+) | 68.8% ±4.5 pts | 69.4% |
| Unemployment rate | 3.4% ±3.8 pts | 3.8% |
| Drove alone to work | 78.5% ±4.7 pts | 65.2% |
| Carpooled | 5.6% ±2.2 pts | 6.3% |
| Public transportation | 0.1% ±0.2 pts | 3.7% |
| Walked | 1.2% ±1.0 pts | 8.2% |
| Worked from home | 12.9% ±4.1 pts | 13.7% |
| Mean travel time to work | 21.3 min ±1.9 | 19.4 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 101 compare with the other tracts in Johnson County?
Among Johnson County's tracts with a reliable estimate, Census Tract 101 ranks as shown below (1 = highest).
| Measure | In Johnson County |
|---|---|
| Population | 2nd of 36 |
| Residents per square mile | 34th of 36 |
| Median household income | 2nd of 36 |
| Per capita income | 5th of 36 |
| Median home value | 7th of 35 |
| Median gross rent | 15th of 36 |
| Bachelor's degree or higher | 21st of 36 |
| Median age | 5th of 36 |
| Owner-occupied share | 3rd of 34 |
The tracts next to it on Johnson County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 103.08 | 1st | $148,009±$31,505 · within the margin of this tract |
| Tract 101 | 2nd | $134,571±$11,543 |
| Tract 103.06 | 3rd | $132,875±$57,305 · within the margin of this tract |
| Tract 4.02 | 4th | $126,619±$14,640 · within the margin of this tract |
| Tract 3.06 | 5th | $120,536±$29,874 · 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 101?
4 of the 18 figures for Census Tract 101 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