Census tract · Naugatuck Valley Planning Region
Census Tract 3603, Naugatuck Valley Planning Region, Connecticut
Census Tract 3603, GEOID 09140360300, in Naugatuck Valley Planning Region, Connecticut, entirely within Watertown. 3,557 residents in the ACS 2020-2024 5-year estimates (±754); the 2020 Census counted 3,271.
Residents, 2020-2024
3,557
±754 (90% margin)
2020 Census count: 3,271
Median household income
$90,648
±$7,006 (90% margin)
Naugatuck Valley Planning Region: $86,191
Median home value
$275,100
±$27,869 (90% margin)
Naugatuck Valley Planning Region: $317,700
Median gross rent
$1,163
±$104 (90% margin)
Naugatuck Valley Planning Region: $1,330
Where is Census Tract 3603?
Census Tract 3603 is one of 98 census tracts in Naugatuck Valley Planning Region, Connecticut. It covers 2.20 square miles of land, 1,488 residents per square mile in 2020. Its GEOID, 09140360300, names it uniquely (how tract numbers and GEOIDs work).
7 census tracts border Census Tract 3603: Tract 3491 ($101,477), Tract 3521 ($71,250), Tract 3522 ($42,568), Tract 3523 ($45,848), Tract 3601 ($99,583), Tract 3602 ($122,566) and Tract 3604 ($103,394). 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 3603?
The 2020-2024 American Community Survey puts Census Tract 3603's population at 3,557 (±754) in 1,516 households; the 2020 Census counted 3,271 residents and 1,448 housing units.
| Measure | Tract 3603 | Watertown |
|---|---|---|
| Total population | 3,557 ±754 | 22,253 |
| Households | 1,516 ±257 | 8,772 |
| Average household size | 2.35 ±0.36 | 2.51 |
| Housing units | 1,635 ±243 | 9,417 |
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 3603?
The median resident of Census Tract 3603 is 40.5 years old; 21.8% are under 18 and 17.4% are 65 or older. The largest group is non-Hispanic white residents at 65.7%, then Hispanic or Latino residents (of any race) at 26.8%. 9.4% of residents were born outside the United States.
| Measure | Tract 3603 | Watertown |
|---|---|---|
| Median age | 40.5 ±9.1 | 46.3 |
| Under 18 years | 21.8% ±8.4 pts | 17.7% |
| 65 years and over | 17.4% ±4.4 pts | 23.3% |
| Hispanic or Latino (any race) | 26.8% ±17.0 pts | 10.2% |
| White alone, not Hispanic | 65.7% ±15.5 pts | 82.3% |
| Black or African American alone, not Hispanic | 2.8% ±4.4 pts | 1.1% |
| Asian alone, not Hispanic | 0.0% ±1.2 pts | 2.6% |
| 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 | 4.7% ±3.7 pts | 3.0% |
| Some other race alone, not Hispanic | 0.0% ±1.2 pts | 0.9% |
| Born outside the United States | 9.4% ±4.9 pts | 10.4% |
| Speak a language other than English at home (age 5+) | 21.4% ±11.8 pts | 13.6% |
| Civilian veterans (age 18+) | 4.9% ±2.9 pts | 5.4% |
| With a disability | 14.8% ±6.2 pts | 15.3% |
| No health insurance coverage | 1.4% ±1.8 pts | 2.2% |
| High school graduate or higher (age 25+) | 94.6% ±3.4 pts | 94.3% |
| Bachelor's degree or higher (age 25+) | 31.1% ±7.9 pts | 38.6% |
| Graduate or professional degree (age 25+) | 12.5% ±5.2 pts | 17.5% |
| Lived in the same house a year earlier | 98.1% ±1.3 pts | 93.9% |
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 3603 earn?
Half of the 1,516 households in Census Tract 3603 earn less than $90,648 a year (±$7,006), against $86,191 across Naugatuck Valley Planning Region: 54th highest of the county's 96 tracts with a reliable estimate. 3.4% of residents live below the poverty line.
| Measure | Tract 3603 | Watertown |
|---|---|---|
| Median household income | $90,648 ±$7,006 | $101,691 |
| Mean household income | $103,201 ±$11,071 | $121,601 |
| Per capita income | $42,531 ±$6,395 | $48,479 |
| People below the poverty line | 3.4% ±2.2 pts | 4.3% |
| Children under 18 below the poverty line | 0.0% ±5.3 pts | 6.6% |
| Households receiving SNAP | 6.1% ±3.6 pts | 8.0% |
| Households with a computer | 92.6% ±3.3 pts | 96.2% |
| Households with a broadband subscription | 92.4% ±3.7 pts | 93.5% |
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 3603?
Owners occupy 79.8% of Census Tract 3603's occupied homes and renters 20.2%. The median owner-occupied home is valued at $275,100 by its owner (±$27,869). The median renter pays $1,163 a month including utilities, and 38.5% of renters pay 35% or more of their income on rent.
| Measure | Tract 3603 | Watertown |
|---|---|---|
| Median home value (owner-occupied) | $275,100 ±$27,869 | $333,500 |
| Median gross rent | $1,163 ±$104 | $1,275 |
| Renters paying 35% or more of income on rent | 38.5% ±18.4 pts | 52.9% |
| Median monthly owner costs, with a mortgage | $2,275 ±$339 | $2,234 |
| Owner-occupied homes | 79.8% ±8.0 pts | 83.9% |
| Renter-occupied homes | 20.2% ±8.0 pts | 16.1% |
| Housing units | 1,635 ±243 | 9,417 |
| Single-family detached homes | 79.8% ±6.6 pts | 77.9% |
| Mobile homes | 0.0% ±2.6 pts | 0.0% |
| Built 2020 or later | 0.0% ±2.6 pts | 0.7% |
| Built 2010 to 2019 | 4.4% ±3.5 pts | 4.8% |
| Built 1939 or earlier | 14.9% ±6.0 pts | 16.0% |
| Households with no vehicle | 2.8% ±2.4 pts | 4.7% |
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 3603 get to work?
91.2% of Census Tract 3603's workers drive alone and 5.2% work from home. The average trip to work takes 22.0 minutes.
| Measure | Tract 3603 | Watertown |
|---|---|---|
| In the labor force (age 16+) | 70.2% ±6.9 pts | 67.6% |
| Unemployment rate | 1.5% ±1.8 pts | 3.0% |
| Drove alone to work | 91.2% ±5.2 pts | 79.2% |
| Carpooled | 2.3% ±2.9 pts | 6.9% |
| Public transportation | 0.4% ±0.7 pts | 0.3% |
| Walked | 0.0% ±2.2 pts | 1.3% |
| Worked from home | 5.2% ±3.1 pts | 10.1% |
| Mean travel time to work | 22.0 min ±3.3 | 23.9 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 3603 compare with the other tracts in Naugatuck Valley Planning Region?
Among Naugatuck Valley Planning Region's tracts with a reliable estimate, Census Tract 3603 ranks as shown below (1 = highest).
| Measure | In Naugatuck Valley Planning Region |
|---|---|
| Population | 75th of 98 |
| Residents per square mile | 56th of 98 |
| Median household income | 54th of 96 |
| Per capita income | 57th of 97 |
| Median home value | 50th of 97 |
| Median gross rent | 74th of 88 |
| Poverty rate | 64th of 66 |
| Bachelor's degree or higher | 51st of 95 |
| Median age | 57th of 98 |
| Owner-occupied share | 34th of 96 |
The tracts next to it on Naugatuck Valley Planning Region's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 1253 | 51st | $91,958±$16,812 · within the margin of this tract |
| Tract 3621.01 | 52nd | $90,833±$21,537 · within the margin of this tract |
| Tract 3452.01 | 53rd | $90,690±$19,248 · within the margin of this tract |
| Tract 3603 | 54th | $90,648±$7,006 |
| Tract 1302.02 | 55th | $90,119±$19,418 · within the margin of this tract |
| Tract 1102.02 | 56th | $86,415±$33,203 · within the margin of this tract |
| Tract 1101 | 57th | $85,412±$15,891 · 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 3603?
2 of the 18 figures for Census Tract 3603 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