77550 ZIP Code, Galveston, TX

77550 is a ZIP code in Galveston, Texas in Galveston County. It covers 7.6 square miles of land, centered about 48 miles southeast of downtown Houston. The closest ZIP codes are 77555, 77551 and 77590. 23,489 people live here in 11,860 households. At about 3,107 people per square mile it has suburban density, and owners and renters are mixed (40% own). Median household income is $45,047, well below the Texas median of $78,476; 24% of residents moved in during the past year.

Quick facts

Key figures

MeasureValue
Residents23,489
Households11,860
Median household income$45,047
Income per person$35,654
Median age39.6
Homeowners40.0%
Median home value$325,900
Median rent$1,205
Bachelor's degree or higher34.5%
Average commute (minutes)17.9
Households with kids under 1817.5%
Moved in the past year24.2%
Below the poverty line26.9%
Broadband internet89.3%
Speak a non-English language at home24.8%

Household income

% of householdsValue
<$10K13.7%
$10–15K6.2%
$15–25K9.1%
$25–35K10.7%
$35–50K13.1%
$50–75K13.5%
$75–100K10.0%
$100–150K13.3%
$150–200K4.9%
$200K+5.5%

Age

% of all residentsValue
<109.6%
10–197.6%
20–249.3%
25–3418.1%
35–4410.4%
45–5411.2%
55–6413.4%
65–7413.6%
75+6.8%

Tenure

% of housing unitsValue
Owned, with mortgage13.2%
Owned outright16.4%
Rented44.1%
Vacant26.2%

Type of building

% of housing unitsValue
Detached house53.0%
Townhome2.1%
2–4 units16.7%
5–19 units13.3%
20+ units14.4%
Mobile / other0.6%

Businesses in 77550

697 business establishments with 11,252 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

77550 has 20 USPS carrier routes with 13,506 residential and 1,147 business mailboxes. Open the EDDM route map.

Carrier routes in 77550

77550 has 20 USPS carrier routes (20 city (C)) with 13,506 residential and 1,147 business mailboxes. Routes range from 412 homes (C041) to 1,466 homes (C001); the median route has 647 homes. The Census counted 11,860 households in 77550 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4993
500–74912
750–9994
1,000–1,4991
1,500+0

Best routes in 77550 for…

Highest income

For bigger-ticket offers: remodeling, pools, financial planning, private schools.

  1. Route C023 — Est. median household income $71,836, 728 homes
  2. Route C009 — Est. median household income $68,974, 706 homes
  3. Route C036 — Est. median household income $65,606, 623 homes
  4. Route C010 — Est. median household income $63,241, 733 homes
  5. Route C039 — Est. median household income $62,273, 624 homes

Select these 5 routes on the route map

Often mailed by: Home services EDDM, Real estate EDDM postcards, Landscaping and lawn care mailers

Most families with kids

For tutoring, youth sports, pediatric dental, child care and family dining.

  1. Route C040 — Est. families with children under 18 28.2%, 503 homes
  2. Route C038 — Est. families with children under 18 23.0%, 695 homes
  3. Route C014 — Est. families with children under 18 21.4%, 817 homes
  4. Route C030 — Est. families with children under 18 21.4%, 644 homes
  5. Route C041 — Est. families with children under 18 21.4%, 412 homes

Select these 5 routes on the route map

Often mailed by: Dental practice EDDM, Healthcare and clinic mailers

Most homeowners

Owners decide on roofs, HVAC, lawns, solar and insurance; renters usually can't.

  1. Route C038 — Est. owner-occupied homes 54.7%, 695 homes
  2. Route C036 — Est. owner-occupied homes 53.3%, 623 homes
  3. Route C040 — Est. owner-occupied homes 52.3%, 503 homes
  4. Route C039 — Est. owner-occupied homes 51.6%, 624 homes
  5. Route C023 — Est. owner-occupied homes 48.9%, 728 homes

Select these 5 routes on the route map

Often mailed by: Roofing direct mail, HVAC postcards

Most new movers

New residents are still choosing a dentist, a gym and a lawn service.

  1. Route C041 — Est. residents who moved in the past year 46.9%, 412 homes
  2. Route C019 — Est. residents who moved in the past year 45.9%, 761 homes
  3. Route C014 — Est. residents who moved in the past year 38.9%, 817 homes
  4. Route C003 — Est. residents who moved in the past year 34.1%, 434 homes
  5. Route C001 — Est. residents who moved in the past year 32.9%, 1,466 homes

Select these 5 routes on the route map

Often mailed by: Restaurant EDDM menus and offers, Gym and fitness mailers

Newest homes

Newer subdivisions: landscaping, window treatments, fencing, security, home warranties.

  1. Route C019 — Est. homes built 2010 or later 26.4%, 761 homes
  2. Route C041 — Est. homes built 2010 or later 26.0%, 412 homes
  3. Route C004 — Est. homes built 2010 or later 20.2%, 650 homes
  4. Route C013 — Est. homes built 2010 or later 15.7%, 589 homes
  5. Route C010 — Est. homes built 2010 or later 11.9%, 733 homes

Select these 5 routes on the route map

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route C003 — USPS business mailboxes 272, 434 homes
  2. Route C020 — USPS business mailboxes 241, 428 homes
  3. Route C019 — USPS business mailboxes 99, 761 homes
  4. Route C004 — USPS business mailboxes 91, 650 homes
  5. Route C012 — USPS business mailboxes 53, 552 homes

Select these 5 routes on the route map

Every carrier route in 77550

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C001City1,46617$47,82533.8%17.7%32.9%
C003City434272$51,10523.3%14.0%34.1%
C004City65091$48,03333.3%13.4%26.6%
C006City7664$44,64945.3%10.8%26.8%
C009City70621$68,97447.8%12.7%14.8%
C010City73325$63,24146.4%15.9%12.3%
C012City55253$56,48947.2%15.6%23.7%
C013City58918$37,14942.7%12.6%30.0%
C014City81727$57,63437.0%21.4%38.9%
C018City61626$59,84545.3%13.2%24.5%
C019City76199$31,92933.0%20.2%45.9%
C020City428241$50,39929.2%14.5%28.9%
C021City75927$41,68636.2%18.7%21.7%
C023City72852$71,83648.9%13.9%19.4%
C030City64437$41,90442.2%21.4%20.5%
C036City62319$65,60653.3%20.5%21.9%
C038City69536$54,73554.7%23.0%22.5%
C039City6248$62,27351.6%19.8%22.7%
C040City50348$54,88552.3%28.2%25.6%
C041City41226$30,79627.4%21.4%46.9%

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 77550 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

Areas that include 77550

Where it ranks

Mail every home in 77550

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 77550, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 77550 in?
77550 is a Galveston, TX mailing address. By land area, 100% lies inside Galveston.
What county is 77550 in?
77550 is in Galveston County.
What is the population of 77550?
About 23,489 people (±1,067), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 24,247.
What is the median household income in 77550?
$45,047 (±$5,353), compared with $78,476 for Texas as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 77550?
20 USPS carrier routes with 13,506 residential and 1,147 business mailboxes (14,653 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 77550?
The closest, measured center to center: 77555 (0.5 mi, Galveston), 77551 (4.3 mi, Galveston), 77590 (10.1 mi, Texas City), 77554 (10.6 mi, Galveston), 77650 (11 mi, Bolivar Peninsula) and 77568 (13.8 mi, La Marque).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.