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/801

ZIP codes starting with 801

ZIP codes
44
States
CO
Largest city
Parker, CO
Population
769,032

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 801xx

ZIP codes starting with 801
ZIP City Type Population Median income Median home
80101 Agate , CO Standard 423 $70,417 $400,000
80102 Bennett , CO Standard 6,690 $113,125 $542,600
80103 Byers , CO Standard 3,215 $102,656 $501,900
80104 Castle Rock , CO Standard 38,479 $134,335 $624,200
80105 Deer Trail , CO Standard 2,182 $79,792 $374,300
80106 Elbert , CO Standard 4,455 $136,852 $748,800
80107 Elizabeth , CO Standard 15,102 $135,262 $684,800
80108 Castle Rock , CO Standard 36,730 $181,049 $881,700
80109 Castle Rock , CO Standard 28,400 $155,025 $675,500
80110 Englewood , CO Standard 23,825 $85,900 $497,300
80111 Englewood , CO Standard 31,561 $135,995 $916,500
80112 Englewood , CO Standard 36,816 $108,874 $659,200
80113 Englewood , CO Standard 22,976 $96,590 $709,100
80116 Franktown , CO Standard 5,132 $146,000 $960,400
80117 Kiowa , CO Standard 2,756 $115,673 $667,100
80118 Larkspur , CO Standard 5,632 $158,155 $886,900
80120 Littleton , CO Standard 29,725 $94,296 $628,300
80121 Littleton , CO Standard 18,029 $142,056 $707,900
80122 Littleton , CO Standard 32,195 $128,691 $634,400
80123 Littleton , CO Standard 44,549 $105,932 $620,100
80124 Lone Tree , CO Standard 22,555 $129,858 $773,900
80125 Littleton , CO Standard 15,630 $179,983 $762,200
80126 Littleton , CO Standard 44,882 $169,882 $782,000
80127 Littleton , CO Standard 43,494 $137,040 $693,200
80128 Littleton , CO Standard 36,712 $121,436 $586,000
80129 Littleton , CO Standard 30,223 $141,667 $663,800
80130 Littleton , CO Standard 24,719 $158,741 $691,800
80131 Louviers , CO Standard 276 $107,250 $427,500
80132 Monument , CO Standard 30,073 $161,670 $773,100
80133 Palmer Lake , CO Standard 2,425 $120,625 $482,500
80134 Parker , CO Standard 80,302 $146,778 $677,700
80135 Sedalia , CO Standard 4,141 $136,083 $880,500
80136 Strasburg , CO Standard 6,144 $111,528 $554,600
80137 Watkins , CO Standard 1,689 $134,890 $669,000
80138 Parker , CO Standard 36,895 $145,013 $723,600
80150 Englewood , CO No street area — — —
80151 Englewood , CO No street area — — —
80155 Englewood , CO No street area — — —
80160 Littleton , CO No street area — — —
80161 Littleton , CO No street area — — —
80162 Littleton , CO No street area — — —
80163 Littleton , CO No street area — — —
80165 Littleton , CO No street area — — —
80166 Littleton , CO No street area — — —

Cite this page

zipcodes.pro. “ZIP codes starting with 801.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/801

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