The original 5 digit zip code was introduced in 1963, but the additional 4 numbers were introduced in the 1980’s.. so they’ve been around for quite some time… Using the complete 9 digit zip code improves mail delivery…
Did you know that the first # of every zip code (0-9) indicates the general area of the country ~ state. Lowest numbers in the east and they increase as you move west…
- 0: Connecticut (CT), Massachusetts (MA), Maine (ME), New Hampshire (NH), New Jersey (NJ), Puerto Rico (PR), Rhode Island (RI), Vermont (VT), Virgin Islands (VI)
- 1: Delaware (DE), New York (NY), Pennsylvania (PA)
- 2: District of Columbia (DC), Maryland (MD), North Carolina (NC), South Carolina (SC), Virginia (VA), West Virginia (WV)
- 3: Alabama (AL), Florida (FL), Georgia (GA), Mississippi (MS), Tennessee (TN)
- 4: Indiana (IN), Kentucky (KY), Michigan (MI), Ohio (OH)
- 5: Iowa (IA), Minnesota (MN), Montana (MT), North Dakota (ND), South Dakota (SD), Wisconsin (WI)
- 6: Illinois (IL), Kansas (KS), Missouri (MO), Nebraska (NE)
- 7: Arkansas (AR), Louisiana (LA), Oklahoma (OK), Texas (TX)
- 8: Arizona (AZ), Colorado (CO), Idaho (ID), New Mexico (NM), Nevada (NV), Utah (UT), Wyoming (WY)
- 9: Alaska (AK), American Samoa (AS), California (CA), Guam (GU), Hawaii (HI), Oregon (OR), Washington (WA)