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zipcodes.pro — ZIP/78203

78203

ZIP 78203 is in San Antonio, Texas, in Bexar County; area codes 210 and 726; Central time. San Antonio has 83 ZIP codes in all.

Type
Standard
Time zone
America/Chicago
County
Bexar
Population
5,200
Coordinates
29.4151, -98.4593
☼ Live from 78203 — San Antonio, TX

Weather right now

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NEXRAD radar
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Local time: —

Where 78203 is

Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.

★ Weird and wonderful facts about 78203
  • 🔢 Type 78203 into a pocket calculator and turn it upside down: EOZBL — not quite a word, sorry.
  • ➕ 78203 is a prime number. It cannot be divided by anything except 1 and itself. Its digits add up to 20, a total 2,586 other ZIP codes share.
  • 💾In binary, the way a computer stores it: 10011000101111011
  • 🏠 Its numerical neighbours: 78202 (San Antonio, TX, 1 mi away) and 78204 (San Antonio, TX, 3 mi away).
  • 🔄 Backwards, 78203 becomes 30287 — and that is a real ZIP code: Morrow, GA, 877 miles away.
  • 👥 61 other ZIP codes are made of exactly the same digits (02738, 02783, 02837, 02873, 03278, 03287, …). The farthest-flung twin is 03872 in Sanbornville, NH, 1,797 miles away.
  • 🧭 Farther south than 95% of all ZIP codes, and farther west than 78%.
  • 🎯720 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
  • 🌏 Dig straight through the Earth from 78203 and you would come out at 29.42°S, 81.54°E — 1,500 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
  • ☀Longest day of the year: 14h 02m of daylight. Shortest: 10h 15m.
  • 📏 At 1.4 square miles of land, 78203 is bigger than 10% of ZIP codes — room for about 1.0 Central Parks.
🌙 The sky over 78203 today
  • Working out the sun…
🌋 Shake report
  • Checking the USGS…

Source: USGS.

People and housing

Population5,200This ZIP5,200
Households1,802This ZIP1,802
Housing units2,392This ZIP2,392
Median age33.4This ZIP33.4Texas35.6US 38.9
Median household income$35,536This ZIP$35,536Texas$78,476US $80,734
Median home value$158,000This ZIP$158,000Texas$283,800US $332,700
Median gross rent$1,051This ZIP$1,051Texas$1,403US $1,413
Bachelor's degree or higher10.8%This ZIP10.8%
Mean commute22.1 minThis ZIP22.1 min
Population density3,804.0 / sq miThis ZIP3,804.0 / sq mi

Business and tax activity

Business establishments78This ZIP78
Employees805This ZIP805
Annual payroll$38,358,000This ZIP$38,358,000
Tax returns filed2,330This ZIP2,330
Total adjusted gross income$93,988,000This ZIP$93,988,000

Land area

Land area1.37 sq miThis ZIP1.37 sq mi
Water area0.00 sq mi

Other place names in 78203

Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.

ZIP codes near 78203

ZIPCityDistance
78202 San Antonio, TX 0.9 mi
78210 San Antonio, TX 1.4 mi
78206 San Antonio, TX 1.6 mi
78241 San Antonio, TX 1.6 mi
78246 San Antonio, TX 1.6 mi
78265 San Antonio, TX 1.6 mi
78268 San Antonio, TX 1.6 mi
78269 San Antonio, TX 1.6 mi
78270 San Antonio, TX 1.6 mi
78278 San Antonio, TX 1.6 mi

Find every ZIP code within 10 miles of 78203 →

Questions about this ZIP code

Where is ZIP code 78203?

78203 is in San Antonio, Texas, in Bexar County, part of the San Antonio-New Braunfels, TX metropolitan area. Its published point location is 29.4151, -98.4593.

What county is 78203 in?

78203 lies in Bexar County.

What area code is 78203?

San Antonio uses area codes 210 and 726, from NANPA's telephone records.

What time zone is 78203 in?

78203 uses America/Chicago.

How many people live in 78203?

About 5,200 people live in ZIP code 78203, in 1,802 households, at 3,804.0 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.

What is the median household income in 78203?

$35,536 a year, against $78,476 across Texas.

What ZIP codes are near 78203?

The closest are 78202 (0.9 mi), 78210 (1.4 mi), 78206 (1.6 mi), 78241 (1.6 mi) and 78246 (1.6 mi).

Is 78203 a PO Box ZIP code?

78203 is a standard ZIP code. A normal ZIP code with street delivery.

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Cite this page

zipcodes.pro. “78203 ZIP Code — San Antonio, Texas (Bexar County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78203

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