Census tract · Brazoria County
Census Tract 6618, Brazoria County, Texas
Census Tract 6618, GEOID 48039661800, in Brazoria County, Texas, partly within Iowa Colony, Alvin and Manvel. 12,512 residents in the ACS 2020-2024 5-year estimates (±1,518); the 2020 Census counted 8,721.
Residents, 2020-2024
12,512
±1,518 (90% margin)
2020 Census count: 8,721
Median household income
$153,720
±$18,959 (90% margin)
Brazoria County: $97,993
Median home value
$439,700
±$22,133 (90% margin)
Brazoria County: $301,600
Median gross rent
$2,242
±$899 (90% margin)
Brazoria County: $1,454
Where is Census Tract 6618?
Census Tract 6618 is one of 78 census tracts in Brazoria County, Texas. It covers 61.96 square miles of land, 141 residents per square mile in 2020. Its GEOID, 48039661800, names it uniquely (how tract numbers and GEOIDs work).
| Place | Share of the tract |
|---|---|
| Iowa Colony | 28% |
| Alvin | 16% |
| Manvel | 6% |
7 census tracts border Census Tract 6618: Tract 6607.08 ($133,231), Tract 6615.01 ($74,934), Tract 6615.02 ($81,595), Tract 6617 ($88,750), Tract 6619.01 ($103,420), Tract 6619.02 ($102,108) and Tract 6622 ($92,632). 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 6618?
The 2020-2024 American Community Survey puts Census Tract 6618's population at 12,512 (±1,518) in 3,906 households; the 2020 Census counted 8,721 residents and 2,947 housing units.
| Measure | Tract 6618 | Brazoria County |
|---|---|---|
| Total population | 12,512 ±1,518 | 391,255 |
| Households | 3,906 ±382 | 133,898 |
| Average household size | 3.20 ±0.28 | 2.82 |
| Housing units | 4,403 ±391 | 150,321 |
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 6618?
The median resident of Census Tract 6618 is 34.0 years old; 34.2% are under 18 and 8.8% are 65 or older. The largest group is non-Hispanic white residents at 36.3%, then Hispanic or Latino residents (of any race) at 29.6%. 10.9% of residents were born outside the United States.
| Measure | Tract 6618 | Brazoria County |
|---|---|---|
| Median age | 34.0 ±3.6 | 36.7 |
| Under 18 years | 34.2% ±4.9 pts | 25.6% |
| 65 years and over | 8.8% ±1.8 pts | 12.8% |
| Hispanic or Latino (any race) | 29.6% ±9.3 pts | 31.6% |
| White alone, not Hispanic | 36.3% ±9.9 pts | 41.6% |
| Black or African American alone, not Hispanic | 25.5% ±9.9 pts | 15.9% |
| Asian alone, not Hispanic | 3.2% ±2.1 pts | 7.4% |
| American Indian and Alaska Native alone, not Hispanic | 0.0% ±0.4 pts | 0.2% |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0% ±0.4 pts | 0.0% |
| Two or more races, not Hispanic | 5.3% ±3.5 pts | 2.9% |
| Some other race alone, not Hispanic | 0.0% ±0.4 pts | 0.4% |
| Born outside the United States | 10.9% ±4.8 pts | 14.6% |
| Speak a language other than English at home (age 5+) | 25.8% ±8.3 pts | 27.8% |
| Civilian veterans (age 18+) | 7.9% ±3.4 pts | 6.3% |
| With a disability | 5.0% ±1.9 pts | 11.7% |
| No health insurance coverage | 13.9% ±5.9 pts | 12.7% |
| High school graduate or higher (age 25+) | 90.7% ±3.9 pts | 89.2% |
| Bachelor's degree or higher (age 25+) | 46.1% ±5.6 pts | 33.1% |
| Graduate or professional degree (age 25+) | 16.3% ±4.6 pts | 12.7% |
| Lived in the same house a year earlier | 87.0% ±8.2 pts | 89.2% |
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 6618 earn?
Half of the 3,906 households in Census Tract 6618 earn less than $153,720 a year (±$18,959), against $97,993 across Brazoria County: 7th highest of the county's 75 tracts with a reliable estimate.
| Measure | Tract 6618 | Brazoria County |
|---|---|---|
| Median household income | $153,720 ±$18,959 | $97,993 |
| Mean household income | $157,604 ±$15,003 | $123,045 |
| Per capita income | $49,230 ±$5,231 | $42,527 |
| People below the poverty line | 5.3% ±3.8 pts | 7.4% |
| Children under 18 below the poverty line | 5.0% ±6.1 pts | 8.2% |
| Households receiving SNAP | 6.4% ±4.6 pts | 8.1% |
| Households with a computer | 99.3% ±1.2 pts | 97.1% |
| Households with a broadband subscription | 97.9% ±2.0 pts | 94.0% |
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 6618?
Owners occupy 93.6% of Census Tract 6618's occupied homes and renters 6.4%. The median owner-occupied home is valued at $439,700 by its owner (±$22,133). The median renter pays $2,242 a month including utilities.
| Measure | Tract 6618 | Brazoria County |
|---|---|---|
| Median home value (owner-occupied) | $439,700 ±$22,133 | $301,600 |
| Median gross rent | $2,242 ±$899 | $1,454 |
| Renters paying 35% or more of income on rent | 43.0% ±47.3 pts | 38.6% |
| Median monthly owner costs, with a mortgage | $3,154 ±$229 | $2,331 |
| Owner-occupied homes | 93.6% ±5.0 pts | 74.1% |
| Renter-occupied homes | 6.4% ±5.0 pts | 25.9% |
| Housing units | 4,403 ±391 | 150,321 |
| Single-family detached homes | 82.2% ±5.9 pts | 73.4% |
| Mobile homes | 13.3% ±4.7 pts | 8.9% |
| Built 2020 or later | 22.8% ±7.3 pts | 4.4% |
| Built 2010 to 2019 | 43.6% ±7.7 pts | 19.6% |
| Built 1939 or earlier | 0.0% ±1.1 pts | 1.2% |
| Households with no vehicle | 0.8% ±1.4 pts | 3.1% |
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 6618 get to work?
74.6% of Census Tract 6618's workers drive alone and 18.4% work from home. The average trip to work takes 36.3 minutes. The unemployment rate in 2020-2024 averaged 2.4%.
| Measure | Tract 6618 | Brazoria County |
|---|---|---|
| In the labor force (age 16+) | 73.6% ±5.0 pts | 63.6% |
| Unemployment rate | 2.4% ±1.5 pts | 4.7% |
| Drove alone to work | 74.6% ±6.3 pts | 79.7% |
| Carpooled | 5.6% ±3.7 pts | 7.7% |
| Public transportation | 0.0% ±0.8 pts | 0.2% |
| Walked | 0.0% ±0.8 pts | 0.5% |
| Worked from home | 18.4% ±5.9 pts | 10.8% |
| Mean travel time to work | 36.3 min ±3.1 | 30.6 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 6618 compare with the other tracts in Brazoria County?
Among Brazoria County's tracts with a reliable estimate, Census Tract 6618 ranks as shown below (1 = highest).
| Measure | In Brazoria County |
|---|---|
| Population | 2nd of 77 |
| Residents per square mile | 67th of 77 |
| Median household income | 7th of 75 |
| Per capita income | 23rd of 77 |
| Median home value | 3rd of 75 |
| Median gross rent | 9th of 68 |
| Bachelor's degree or higher | 21st of 76 |
| Median age | 59th of 77 |
| Owner-occupied share | 9th of 76 |
The tracts next to it on Brazoria County's income ladder
| Tract | Rank | Median household income |
|---|---|---|
| Tract 6606.11 | 4th | $161,480±$43,022 · within the margin of this tract |
| Tract 6606.04 | 5th | $161,422±$26,340 · within the margin of this tract |
| Tract 6606.16 | 6th | $161,364±$35,053 · within the margin of this tract |
| Tract 6618 | 7th | $153,720±$18,959 |
| Tract 6607.06 | 8th | $149,106±$21,292 · within the margin of this tract |
| Tract 6603.03 | 9th | $148,438±$19,748 · within the margin of this tract |
| Tract 6631 | 10th | $147,672±$48,763 · 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 6618?
1 of the 18 figures for Census Tract 6618 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