78231 ZIP Code: Greenville, Texas
Official postal information, geographic coordinates, USPS post office locations, and US Census Bureau demographic metrics for postal code 78231 in Greenville, TX.
Postal & Geographic Specifications USPS Data
Demographic & Economic Profile (US Census Bureau)
American Community Survey (ACS) 5-Year Verified Metrics
Editor's Neighborhood Insight & Local Context
78231 is an active postal delivery zone serving Greenville in Hunt County, Texas. Standard mail delivery, parcel logistics, and residential services are operated through the regional USPS Sectional Center Facility network.
Designated USPS Post Office Facility Mail & Parcel Drop-off
Mon-Fri 8:30 AM - 5:00 PM; Sat 9:00 AM - 1:00 PM; Sun Closed
Geographic Map & Coordinates
29.7000, -103.9000Adjacent & Contiguous ZIP Codes
Nearby postal codes bordering 78231 in Greenville
Frequently Asked Questions About 78231 (Greenville, TX)
What county is ZIP code 78231 located in for tax and voter purposes? ▾
ZIP code 78231 is located within Hunt County, Texas. The official county seat is Greenville, and the primary jurisdiction carries Texas FIPS code 48231.
What is the 4-digit ZIP+4 code for 78231? ▾
The full 9-digit postal code format is 78231-XXXX, where the last 4 digits specify exact delivery routes, high-rise buildings, or street blocks. For regular mail and parcel shipping, the 5-digit code 78231 is fully valid, while specific ZIP+4 extensions can be verified with USPS address validation.
Where is the nearest USPS post office for 78231 and what are the lobby hours? ▾
The primary USPS facility serving 78231 is USPS Post Office - Greenville, located at 100 Main St, Greenville, TX 78231. Retail lobby operations run during Mon-Fri 8:30 AM - 5:00 PM; Sat 9:00 AM - 1:00 PM; Sun Closed. Contact inquiries can be made at (800) 275-8777.
What telephone area codes and time zone apply to 78231? ▾
ZIP code 78231 is located in the America/Chicago (CST / CDT) time zone (observing Daylight Saving Time). Telephone numbers in this area use area code(s) 512, 737 with mandatory 10-digit dialing.
What is the population and median household income for 78231? ▾
According to U.S. Census Bureau ACS data, ZIP code 78231 in Greenville has an estimated population of 39,982 residents and a median household income of $81,840 per year (compared to the Texas state median of $74,640).
What postal codes border 78231 in Greenville? ▾
Adjacent and contiguous ZIP codes bordering 78231 include 78031 (Johnson City, ~0 mi), 78131 (San Diego, ~0 mi), 78331 (Cameron, ~0 mi), 78431 (Sterling City, ~0 mi).