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/MONTGOMERY

Montgomery County, TX ZIP codes

There are 27 ZIP codes in Montgomery County, TX, in 11 towns, from 77301 to 77873. The largest are 77386 (Spring), 77354 (Magnolia) and 77365 (Porter).

The county seat is Conroe.

ZIP codes
27
Towns
11
County seat
Conroe
County FIPS
48339
State
Texas
Population
684,432
Median household income
$97,701
Land area
1,042 sq mi
Area codes
281, 346, 713, 832, 936

Montgomery County ZIP codes by town

Conroe (county seat)
77301, 77302, 77303, 77304, 77305, 77306, 77384, 77385

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.

Map of Montgomery County ZIP codes

773017730277303773047730577306773167731877333773537735477355773567735777362773657737277378773807738177382773847738577386773877739377873

The ZIP codes of Montgomery 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.

Montgomery County in numbers

About 684,432 people live in Montgomery County, in 247,541 households, the 11th most populous of Texas's 254 counties. The median household income is $97,701 a year, 24% above the Texas median of $78,476 (US: $80,734). The median owner-occupied home is valued at $346,200 (22% above the Texas median), and median gross rent is $1,532 a month. The median age is 37.2; 38.8% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 32 minutes.

Population684,432Montgomery684,432
Households247,541Montgomery247,541
Median age37.2Montgomery37.2Texas35.6US 38.9
Median household income$97,701Montgomery$97,701Texas$78,476US $80,734
Median home value$346,200Montgomery$346,200Texas$283,800US $332,700
Median gross rent$1,532Montgomery$1,532Texas$1,403US $1,413
Bachelor's degree or higher38.8%Montgomery38.8%Texas33.8%US 35.7%
Mean commute31.8 minMontgomery31.8 minTexas26.7 minUS 26.4 min
Population density657 / sq miMontgomery657 / 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 Montgomery County

Largest towns in Montgomery County
TownZIP codesPopulation
Conroe 8 102,360
Spring 6 68,580
Porter 1 46,418
New Caney 1 37,592
Willis 2 6,878
Magnolia 3 4,068
Montgomery 2 2,489
Splendora 1 2,131
Pinehurst 1 1,999
Richards 1 67

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 Montgomery County.

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

Every ZIP code in Montgomery County, with figures

ZIP codes in Montgomery County
ZIP City Type Population Median income Median home
77301 Conroe , TX Standard 37,769 $66,475 $218,600
77302 Conroe , TX Standard 21,546 $84,673 $266,200
77303 Conroe , TX Standard 28,854 $75,348 $240,700
77304 Conroe , TX Standard 44,225 $80,425 $355,300
77305 Conroe , TX No street area — — —
77306 Conroe , TX Standard 18,086 $76,257 $174,100
77316 Montgomery , TX Standard 34,694 $124,055 $431,400
77318 Willis , TX Standard 20,792 $92,415 $316,900
77333 Dobbin , TX No street area — — —
77353 Magnolia , TX No street area — — —
77354 Magnolia , TX Standard 44,900 $112,504 $397,300
77355 Magnolia , TX Standard 32,847 $102,066 $341,300
77356 Montgomery , TX Standard 32,583 $106,804 $409,500
77357 New Caney , TX Standard 37,592 $76,050 $246,200
77362 Pinehurst , TX Standard 8,017 $86,852 $366,100
77365 Porter , TX Standard 46,418 $95,702 $288,700
77372 Splendora , TX Standard 14,367 $79,085 $230,700
77378 Willis , TX Standard 17,629 $71,143 $199,800
77380 Spring , TX Standard 31,369 $88,562 $375,500
77381 Spring , TX Standard 36,139 $143,565 $473,600
77382 Spring , TX Standard 38,986 $162,384 $566,500
77384 Conroe , TX Standard 26,781 $91,667 $422,200
77385 Conroe , TX Standard 28,156 $117,118 $327,100
77386 Spring , TX Standard 69,980 $132,469 $366,600
77387 Spring , TX No street area — — —
77393 Spring , TX No street area — — —
77873 Richards , TX Standard 1,383 $80,938 $285,000

Cite this page

zipcodes.pro. “Montgomery County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/tx/county/montgomery

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