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 — PREFIX/791

ZIP codes starting with 791

ZIP codes
27
States
TX
Largest city
Amarillo, TX
Population
237,442

The first three digits of a ZIP code identify a sectional center facility — the postal processing plant that sorts mail for the area. It is a mail-routing grouping, not an administrative boundary.

Every ZIP code in 791xx

ZIP codes starting with 791
ZIP City Type Population Median income Median home
79101 Amarillo , TX Standard 2,526 $47,759 $167,600
79102 Amarillo , TX Standard 9,393 $51,125 $153,100
79103 Amarillo , TX Standard 11,306 $57,981 $132,300
79104 Amarillo , TX Standard 6,561 $39,920 $94,400
79105 Amarillo , TX No street area — — —
79106 Amarillo , TX Standard 26,161 $59,493 $174,400
79107 Amarillo , TX Standard 36,662 $40,671 $92,600
79108 Amarillo , TX Standard 11,216 $66,676 $163,200
79109 Amarillo , TX Standard 43,578 $70,435 $222,900
79110 Amarillo , TX Standard 16,994 $66,683 $160,100
79111 Amarillo , TX Standard 1,575 $71,103 —
79114 Amarillo , TX No street area — — —
79116 Amarillo , TX No street area — — —
79117 Amarillo , TX No street area — — —
79118 Amarillo , TX Standard 28,107 $87,810 $234,500
79119 Amarillo , TX Standard 24,907 $114,432 $366,000
79120 Amarillo , TX No street area — — —
79121 Amarillo , TX Standard 6,437 $74,659 $288,300
79124 Amarillo , TX Standard 12,019 $112,541 $362,300
79159 Amarillo , TX No street area — — —
79166 Amarillo , TX No street area — — —
79168 Amarillo , TX No street area — — —
79172 Amarillo , TX No street area — — —
79174 Amarillo , TX No street area — — —
79178 Amarillo , TX No street area — — —
79185 Amarillo , TX No street area — — —
79189 Amarillo , TX No street area — — —

Cite this page

zipcodes.pro. “ZIP codes starting with 791.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/791

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