Census tract · San Juan Municipio
Census Tract 91.21, San Juan Municipio, Puerto Rico
Census Tract 91.21, GEOID 72127009121, in San Juan Municipio, Puerto Rico, entirely within San Juan zona urbana. 3,590 residents in the ACS 2020-2024 5-year estimates (±558); the 2020 Census counted 3,411.
Residents, 2020-2024
3,590
±558 (90% margin)
2020 Census count: 3,411
Median household income
$42,356
±$5,926 (90% margin)
San Juan Municipio: $27,992
Median home value
$168,800
±$7,030 (90% margin)
San Juan Municipio: $171,200
Median gross rent
$827
±$186 (90% margin)
San Juan Municipio: $611
Where is Census Tract 91.21?
Census Tract 91.21 is one of 138 census tracts in San Juan Municipio, Puerto Rico. It covers 0.45 square miles of land, 7,614 residents per square mile in 2020. Its GEOID, 72127009121, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| San Juan zona urbana | 100% |
6 census tracts border Census Tract 91.21: Tract 55 ($26,827), Tract 56.02 ($21,667), Tract 91.11 ($29,549), Tract 91.12 ($24,468), Tract 93 ($16,639) and Tract 94 ($30,948). 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 91.21?
The 2020-2024 American Community Survey puts Census Tract 91.21's population at 3,590 (±558) in – households; the 2020 Census counted 3,411 residents and 1,850 housing units.
| Measure | Tract 91.21 | San Juan zona urbana |
|---|---|---|
| Total population | 3,590 ±558 | 317,995 |
| Housing units | 1,921 ±225 | 190,752 |
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 91.21?
The median resident of Census Tract 91.21 is 50.3 years old; 11.5% are under 18 and 32.6% are 65 or older. The largest group is Hispanic or Latino residents (of any race) at 98.5%, then non-Hispanic white residents at 1.5%.
| Measure | Tract 91.21 | San Juan zona urbana |
|---|---|---|
| Median age | 50.3 ±7.4 | 45.7 |
| Under 18 years | 11.5% ±5.2 pts | 15.3% |
| 65 years and over | 32.6% ±6.1 pts | 25.5% |
| Hispanic or Latino (any race) | 98.5% ±1.4 pts | 98.2% |
| White alone, not Hispanic | 1.5% ±1.4 pts | 1.2% |
| Black or African American alone, not Hispanic | 0.0% ±1.5 pts | 0.2% |
| Asian alone, not Hispanic | 0.0% ±1.5 pts | 0.2% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±1.5 pts | 0.0% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±1.5 pts | 0.0% |
| Two or more races, not Hispanic | 0.0% ±1.5 pts | 0.1% |
| Some other race alone, not Hispanic | 0.0% ±1.5 pts | 0.2% |
| No health insurance coverage | 5.6% ±3.6 pts | 8.5% |
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 91.21 earn?
Half of the – households in Census Tract 91.21 earn less than $42,356 a year (±$5,926), against $27,992 across San Juan Municipio: 32nd highest of the county's 120 tracts with a reliable estimate. 17.0% of residents live below the poverty line.
| Measure | Tract 91.21 | San Juan zona urbana |
|---|---|---|
| Median household income | $42,356 ±$5,926 | $28,562 |
| Mean household income | $60,656 ±$12,063 | $54,668 |
| Per capita income | $27,140 ±$5,212 | $26,372 |
| People below the poverty line | 17.0% ±6.8 pts | 38.2% |
| Children under 18 below the poverty line | 34.1% ±28.3 pts | 58.6% |
| Households receiving SNAP | 27.6% ±8.3 pts | 35.5% |
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 91.21?
Owners occupy 68.0% of Census Tract 91.21's occupied homes and renters 32.0%. The median owner-occupied home is valued at $168,800 by its owner (±$7,030). The median renter pays $827 a month including utilities, and 47.0% of renters pay 35% or more of their income on rent.
| Measure | Tract 91.21 | San Juan zona urbana |
|---|---|---|
| Median home value (owner-occupied) | $168,800 ±$7,030 | $173,200 |
| Median gross rent | $827 ±$186 | $612 |
| Renters paying 35% or more of income on rent | 47.0% ±19.5 pts | 45.3% |
| Median monthly owner costs, with a mortgage | $1,117 ±$59 | $1,180 |
| Owner-occupied homes | 68.0% ±8.2 pts | 52.5% |
| Renter-occupied homes | 32.0% ±8.2 pts | 47.5% |
| Housing units | 1,921 ±225 | 190,752 |
| Single-family detached homes | 59.9% ±7.3 pts | 38.2% |
| Mobile homes | 0.0% ±2.8 pts | 0.1% |
| Built 2020 or later | 0.0% ±2.8 pts | 0.2% |
| Built 2010 to 2019 | 2.2% ±2.6 pts | 1.9% |
| Built 1939 or earlier | 1.8% ±2.3 pts | 4.7% |
| Households with no vehicle | 12.4% ±6.6 pts | 20.4% |
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 91.21 get to work?
85.4% of Census Tract 91.21's workers drive alone. The average trip to work takes 25.5 minutes. The unemployment rate in 2020-2024 averaged 10.9%.
| Measure | Tract 91.21 | San Juan zona urbana |
|---|---|---|
| In the labor force (age 16+) | 57.7% ±6.2 pts | 52.6% |
| Unemployment rate | 10.9% ±6.0 pts | 12.2% |
| Drove alone to work | 85.4% ±6.9 pts | 73.4% |
| Carpooled | 2.6% ±2.2 pts | 7.1% |
| Public transportation | 1.4% ±2.5 pts | 3.4% |
| Walked | 1.9% ±2.5 pts | 4.4% |
| Worked from home | 5.5% ±4.6 pts | 8.3% |
| Mean travel time to work | 25.5 min ±3.0 | 24.0 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 91.21 compare with the other tracts in San Juan Municipio?
Among San Juan Municipio's tracts with a reliable estimate, Census Tract 91.21 ranks as shown below (1 = highest).
| Measure | In San Juan Municipio | In San Juan zona urbana |
|---|---|---|
| Population | 28th of 127 | 28th of 120 |
| Residents per square mile | 94th of 137 | 87th of 130 |
| Median household income | 32nd of 120 | 32nd of 113 |
| Per capita income | 38th of 126 | 38th of 119 |
| Median home value | 52nd of 115 | 52nd of 108 |
| Median gross rent | 26th of 119 | 26th of 112 |
| Poverty rate | 111th of 121 | 104th of 114 |
| Median age | 36th of 126 | 35th of 119 |
| Owner-occupied share | 23rd of 121 | 23rd of 114 |
The tracts next to it on San Juan Municipio's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 91.23 | 29th | $44,167±$10,700 · within the margin of this tract |
| Tract 86.01 | 30th | $43,088±$21,846 · within the margin of this tract |
| Tract 65 | 31st | $42,634±$10,578 · within the margin of this tract |
| Tract 91.21 | 32nd | $42,356±$5,926 |
| Tract 100.44 | 33rd | $41,440±$14,066 · within the margin of this tract |
| Tract 54.05 | 34th | $39,891±$6,080 · within the margin of this tract |
| Tract 56.01 | 35th | $39,746±$3,386 · 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 91.21?
4 of the 16 figures for Census Tract 91.21 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