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/668

ZIP codes starting with 668

ZIP codes
36
States
KS
Largest city
Emporia, KS
Population
57,393

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 668xx

ZIP codes starting with 668
ZIP City Type Population Median income Median home
66801 Emporia , KS Standard 27,585 $56,794 $152,700
66830 Admire , KS Standard 203 $57,109 $102,500
66833 Allen , KS Standard 641 $57,819 $126,600
66834 Alta Vista , KS Standard 856 $60,208 $124,200
66835 Americus , KS Standard 1,202 $81,000 $124,000
66838 Burdick , KS Standard 99 $43,971 $106,600
66839 Burlington , KS Standard 3,654 $63,077 $175,500
66840 Burns , KS Standard 474 $56,111 $86,000
66842 Cassoday , KS Standard 508 $73,125 $136,800
66843 Cedar Point , KS Standard 105 $37,422 $112,500
66845 Cottonwood Falls , KS Standard 1,237 $51,771 $89,700
66846 Council Grove , KS Standard 3,333 $61,842 $154,100
66849 Dwight , KS Standard 531 $61,875 $109,600
66850 Elmdale , KS Standard 202 $93,750 $110,100
66851 Florence , KS Standard 659 $48,162 $63,400
66852 Gridley , KS Standard 587 $61,417 $110,600
66853 Hamilton , KS Standard 281 $51,875 $48,900
66854 Hartford , KS Standard 1,007 $96,250 $78,000
66855 Lamont , KS No street area — — —
66856 Lebo , KS Standard 1,583 $75,667 $169,900
66857 Le Roy , KS Standard 872 $62,143 $135,800
66858 Lincolnville , KS Standard 428 $76,563 $92,500
66859 Lost Springs , KS Standard 158 $80,000 —
66860 Madison , KS Standard 1,342 $60,531 $76,400
66861 Marion , KS Standard 2,769 $60,565 $150,300
66862 Matfield Green , KS Standard 68 — $169,400
66863 Neal , KS Standard 27 — —
66864 Neosho Rapids , KS Standard 375 $37,422 $58,300
66865 Olpe , KS Standard 1,105 $93,333 $181,600
66866 Peabody , KS Standard 1,737 $58,705 $97,200
66868 Reading , KS Standard 620 $103,393 $150,000
66869 Strong City , KS Standard 669 $51,250 $109,500
66870 Virgil , KS Standard 121 $34,375 —
66871 Waverly , KS Standard 1,347 $71,094 $145,100
66872 White City , KS Standard 807 $58,906 $76,700
66873 Wilsey , KS Standard 201 $75,417 $76,400

Cite this page

zipcodes.pro. “ZIP codes starting with 668.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/prefix/668

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