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/045

ZIP codes starting with 045

ZIP codes
31
States
ME
Largest city
Bath, ME
Population
50,673

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 045xx

ZIP codes starting with 045
ZIP City Type Population Median income Median home
04530 Bath , ME Standard 11,275 $79,649 $336,800
04535 Alna , ME Standard 818 $93,125 $367,400
04537 Boothbay , ME Standard 1,685 $76,667 $358,600
04538 Boothbay Harbor , ME Standard 1,810 $56,500 $388,100
04539 Bristol , ME Standard 1,456 $96,111 $346,900
04541 Chamberlain , ME Standard 45 — —
04543 Damariscotta , ME Standard 2,192 $59,423 $363,500
04544 East Boothbay , ME Standard 978 $59,375 $411,500
04547 Friendship , ME Standard 1,213 $75,625 $275,000
04548 Georgetown , ME Standard 1,012 $84,250 $427,200
04549 Isle Of Springs , ME No street area — — —
04551 Bremen , ME Standard 917 $100,000 $425,300
04553 Newcastle , ME Standard 1,913 $89,868 $398,000
04554 New Harbor , ME Standard 514 $85,288 $501,700
04555 Nobleboro , ME Standard 1,906 $100,417 $352,600
04556 Edgecomb , ME Standard 1,251 $108,750 $348,400
04558 Pemaquid , ME Standard 382 $91,477 $526,800
04562 Phippsburg , ME Standard 2,238 $107,833 $335,800
04563 Cushing , ME Standard 1,460 $83,500 $409,800
04564 Round Pond , ME Standard 520 $132,604 $578,500
04565 Sebasco Estates , ME No street area — — —
04568 South Bristol , ME Standard 512 $54,478 $550,000
04570 Squirrel Island , ME Standard 3 — —
04571 Trevett , ME Standard 439 $58,830 $257,000
04572 Waldoboro , ME Standard 5,253 $69,107 $274,900
04573 Walpole , ME Standard 557 $86,250 $420,000
04574 Washington , ME Standard 1,624 $59,861 $195,200
04575 West Boothbay Harbor , ME Standard 286 $116,250 $641,300
04576 Southport , ME Standard 547 $89,375 $489,600
04578 Wiscasset , ME Standard 4,709 $81,063 $327,400
04579 Woolwich , ME Standard 3,158 $102,175 $254,500

Cite this page

zipcodes.pro. “ZIP codes starting with 045.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/045

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