Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — STATE/TX/COUNTY/SAN-JACINTO

San Jacinto County, TX ZIP codes

San Jacinto County, TX has 5 ZIP codes, in 5 towns: 77328, 77331, 77371, 77364 and 77359. 1 more crosses into it from a neighbouring county: 77378.

The county seat is Coldspring.

ZIP codes
5
Partly in it
1 more
Towns
5
County seat
Coldspring
County FIPS
48407
State
Texas
Population
28,441
Median household income
$65,364
Land area
569 sq mi
Area codes
713, 832

San Jacinto County ZIP codes by town

Coldspring (county seat)
77331

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in San Jacinto County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of San Jacinto County.

Map of San Jacinto County ZIP codes

7732877331773597736477371

The ZIP codes of San Jacinto County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

San Jacinto County in numbers

About 28,441 people live in San Jacinto County, in 10,881 households, the 98th most populous of Texas's 254 counties. The median household income is $65,364 a year, 17% below the Texas median of $78,476 (US: $80,734). The median owner-occupied home is valued at $209,300 (26% below the Texas median), and median gross rent is $1,060 a month. The median age is 44.0; 16.2% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 41 minutes.

Population28,441San Jacinto28,441
Households10,881San Jacinto10,881
Median age44.0San Jacinto44.0Texas35.6US 38.9
Median household income$65,364San Jacinto$65,364Texas$78,476US $80,734
Median home value$209,300San Jacinto$209,300Texas$283,800US $332,700
Median gross rent$1,060San Jacinto$1,060Texas$1,403US $1,413
Bachelor's degree or higher16.2%San Jacinto16.2%Texas33.8%US 35.7%
Mean commute40.6 minSan Jacinto40.6 minTexas26.7 minUS 26.4 min
Population density50 / sq miSan Jacinto50 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in San Jacinto County

Largest towns in San Jacinto County
TownZIP codesPopulation
Cleveland 1 8,984
Shepherd 1 2,189
Pointblank 1 2,178
Coldspring 1 1,274
Oakhurst 1 266

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with San Jacinto County.

Not sure you are in San Jacinto County? What county am I in? answers from your location, near a county line included.

Every ZIP code in San Jacinto County, with figures

ZIP codes in San Jacinto County
ZIP City Type Population Median income Median home
77328 Cleveland , TX Standard 17,208 $62,428 $190,100
77331 Coldspring , TX Standard 7,556 $62,321 $246,200
77359 Oakhurst , TX Standard 683 $55,625 —
77364 Pointblank , TX Standard 2,178 $62,750 $233,200
77371 Shepherd , TX Standard 7,800 $83,594 $195,000

Cite this page

zipcodes.pro. “San Jacinto County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/tx/county/san-jacinto

Underlying data is public domain or openly licensed — sources, vintages and licences.