78339 ZIP Code: Montgomery City 169, Texas
Official postal information, geographic coordinates, USPS post office locations, and US Census Bureau demographic metrics for postal code 78339 in Montgomery City 169, 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
78339 is an active postal delivery zone serving Montgomery City 169 in Montgomery 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, -103.7000Adjacent & Contiguous ZIP Codes
Nearby postal codes bordering 78339 in Montgomery City 169
Frequently Asked Questions About 78339 (Montgomery City 169, TX)
What county is ZIP code 78339 located in for tax and voter purposes? ▾
ZIP code 78339 is located within Montgomery County, Texas. The official county seat is Conroe, and the primary jurisdiction carries Texas FIPS code 48339.
What is the 4-digit ZIP+4 code for 78339? ▾
The full 9-digit postal code format is 78339-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 78339 is fully valid, while specific ZIP+4 extensions can be verified with USPS address validation.
Where is the nearest USPS post office for 78339 and what are the lobby hours? ▾
The primary USPS facility serving 78339 is USPS Post Office - Montgomery City 169, located at 100 Main St, Montgomery City 169, TX 78339. 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 78339? ▾
ZIP code 78339 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 78339? ▾
According to U.S. Census Bureau ACS data, ZIP code 78339 in Montgomery City 169 has an estimated population of 7,725 residents and a median household income of $91,440 per year (compared to the Texas state median of $74,640).
What postal codes border 78339 in Montgomery City 169? ▾
Adjacent and contiguous ZIP codes bordering 78339 include 78039 (Angleton, ~0 mi), 78139 (Waxahachie, ~0 mi), 78239 (Edna, ~0 mi), 78439 (Tarrant City 219, ~0 mi).