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/011

ZIP codes starting with 011

ZIP codes
22
States
MA
Largest city
Springfield, MA
Population
170,549

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 011xx

ZIP codes starting with 011
ZIP City Type Population Median income Median home
01101 Springfield , MA No street area — — —
01102 Springfield , MA No street area — — —
01103 Springfield , MA Standard 2,477 $21,355 $185,700
01104 Springfield , MA Standard 23,209 $50,154 $234,800
01105 Springfield , MA Standard 11,843 $24,036 $217,800
01106 Longmeadow , MA Standard 15,853 $147,935 $452,100
01107 Springfield , MA Standard 12,009 $35,632 $243,600
01108 Springfield , MA Standard 27,405 $50,661 $250,900
01109 Springfield , MA Standard 31,124 $48,415 $219,900
01111 Springfield , MA No street area — — —
01115 Springfield , MA No street area — — —
01116 Longmeadow , MA No street area — — —
01118 Springfield , MA Standard 14,839 $80,250 $275,100
01119 Springfield , MA Standard 13,616 $57,857 $245,100
01128 Springfield , MA Standard 2,896 $100,313 $272,100
01129 Springfield , MA Standard 5,672 $97,162 $256,700
01138 Springfield , MA No street area — — —
01139 Springfield , MA No street area — — —
01144 Springfield , MA Standard 0 — —
01151 Indian Orchard , MA Standard 9,606 $55,324 $237,200
01152 Springfield , MA No street area — — —
01199 Springfield , MA No street area — — —

Cite this page

zipcodes.pro. “ZIP codes starting with 011.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/011

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