77523 ZIP Code, Baytown, TX

77523 is a ZIP code in Baytown, Texas in Chambers County. It covers 85 square miles of land, centered about 30 miles east of downtown Houston. The closest ZIP codes are 77580, 77521 and 77520. 30,186 people live here in 10,443 households. With about 354 people per square mile it is lightly settled, and most homes are owner-occupied (81%). Median household income is $124,188, well above the Texas median of $78,476; 42% of households have children under 18.

Quick facts

Key figures

MeasureValue
Residents30,186
Households10,443
Median household income$124,188
Income per person$48,234
Median age35.8
Homeowners81.3%
Median home value$372,100
Median rent$1,702
Bachelor's degree or higher28.0%
Average commute (minutes)34
Households with kids under 1841.7%
Moved in the past year15.2%
Below the poverty line8.1%
Broadband internet93.2%
Speak a non-English language at home19.9%

Household income

% of householdsValue
<$10K2.8%
$10–15K2.4%
$15–25K4.8%
$25–35K3.2%
$35–50K2.6%
$50–75K10.4%
$75–100K13.3%
$100–150K21.5%
$150–200K16.1%
$200K+22.9%

Age

% of all residentsValue
<1012.7%
10–1915.9%
20–246.5%
25–3413.6%
35–4417.4%
45–5413.4%
55–649.1%
65–747.7%
75+3.7%

Tenure

% of housing unitsValue
Owned, with mortgage53.5%
Owned outright22.7%
Rented17.4%
Vacant6.4%

Type of building

% of housing unitsValue
Detached house82.9%
Townhome0.2%
2–4 units0.4%
5–19 units3.6%
20+ units4.3%
Mobile / other8.6%

Businesses in 77523

495 business establishments with 10,554 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

77523 has 19 USPS carrier routes with 13,475 residential and 623 business mailboxes. Open the EDDM route map.

Carrier routes in 77523

77523 has 19 USPS carrier routes (19 rural (R)) with 13,475 residential and 623 business mailboxes. Routes range from 553 homes (R022) to 1,065 homes (R033); the median route has 672 homes. The Census counted 10,443 households in 77523 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4990
500–74913
750–9995
1,000–1,4991
1,500+0

Best routes in 77523 for…

Highest income

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

  1. Route R020 — Est. median household income $164,277, 627 homes
  2. Route R027 — Est. median household income $142,812, 727 homes
  3. Route R034 — Est. median household income $137,944, 727 homes
  4. Route R018 — Est. median household income $137,944, 639 homes
  5. Route R024 — Est. median household income $136,923, 771 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 R020 — Est. families with children under 18 53.1%, 627 homes
  2. Route R029 — Est. families with children under 18 50.0%, 723 homes
  3. Route R028 — Est. families with children under 18 49.1%, 792 homes
  4. Route R009 — Est. families with children under 18 47.4%, 655 homes
  5. Route R017 — Est. families with children under 18 43.5%, 573 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 R020 — Est. owner-occupied homes 94.2%, 627 homes
  2. Route R006 — Est. owner-occupied homes 93.5%, 621 homes
  3. Route R027 — Est. owner-occupied homes 91.3%, 727 homes
  4. Route R028 — Est. owner-occupied homes 88.6%, 792 homes
  5. Route R003 — Est. owner-occupied homes 87.3%, 599 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 R029 — Est. residents who moved in the past year 26.1%, 723 homes
  2. Route R014 — Est. residents who moved in the past year 23.8%, 834 homes
  3. Route R003 — Est. residents who moved in the past year 22.6%, 599 homes
  4. Route R024 — Est. residents who moved in the past year 21.1%, 771 homes
  5. Route R034 — Est. residents who moved in the past year 20.9%, 727 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 R034 — Est. homes built 2010 or later 70.6%, 727 homes
  2. Route R018 — Est. homes built 2010 or later 70.6%, 639 homes
  3. Route R024 — Est. homes built 2010 or later 67.3%, 771 homes
  4. Route R017 — Est. homes built 2010 or later 66.0%, 573 homes
  5. Route R009 — Est. homes built 2010 or later 57.5%, 655 homes

Select these 5 routes on the route map

Most businesses

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

  1. Route R022 — USPS business mailboxes 128, 553 homes
  2. Route R013 — USPS business mailboxes 124, 566 homes
  3. Route R024 — USPS business mailboxes 118, 771 homes
  4. Route R033 — USPS business mailboxes 76, 1,065 homes
  5. Route R029 — USPS business mailboxes 46, 723 homes

Select these 5 routes on the route map

Every carrier route in 77523

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
R002Rural6724$118,52772.7%31.4%2.3%
R003Rural59913$131,18587.3%37.7%22.6%
R006Rural6215$131,83993.5%42.0%7.6%
R009Rural6550$118,64484.7%47.4%11.1%
R011Rural8920$114,00283.3%34.7%18.7%
R012Rural8496$118,19379.5%43.4%16.7%
R013Rural566124$97,05782.8%40.7%14.2%
R014Rural83435$89,21060.1%41.8%23.8%
R017Rural57337$128,90374.8%43.5%16.9%
R018Rural6391$137,94469.3%41.3%20.9%
R020Rural62713$164,27794.2%53.1%20.4%
R022Rural553128$118,03082.9%37.8%10.4%
R024Rural771118$136,92371.9%40.8%21.1%
R026Rural5908$96,20379.8%42.2%13.4%
R027Rural7271$142,81291.3%41.8%17.9%
R028Rural7920$130,34588.6%49.1%13.3%
R029Rural72346$98,42573.8%50.0%26.1%
R033Rural1,06576$110,73981.7%35.4%19.7%
R034Rural7278$137,94469.3%41.3%20.9%

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 77523 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 77523

Where it ranks

Mail every home in 77523

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.

Baytown EDDM mailing

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 77523, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 77523 in?
77523 is a Baytown, TX mailing address. By land area, 14% lies inside Mont Belvieu, 7% lies inside Baytown, 5% lies inside Beach City and 1% lies inside Cove; the rest is outside any Census-defined city or community.
What county is 77523 in?
77523 is in Chambers County.
What is the population of 77523?
About 30,186 people (±1,817), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 27,638.
What is the median household income in 77523?
$124,188 (±$10,210), 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 77523?
19 USPS carrier routes with 13,475 residential and 623 business mailboxes (14,108 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 77523?
The closest, measured center to center: 77580 (6.3 mi, Mont Belvieu), 77521 (6.6 mi, Baytown), 77520 (8.4 mi, Baytown), 77597 (11 mi), 77562 (12.2 mi, Highlands) and 77571 (12.7 mi, La Porte).

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