Niantic, IL ZIP Codes, Coordinates & Counties
Niantic, Illinois has 1 ZIP code in Macon county. The approximate center of Niantic is 39.853, -89.158. Niantic has about 3,760 known street addresses.
ZIP codes in Niantic, IL
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 62551 | Macon | 39.853 | -89.158 |
Counties Niantic spans
Macon
Most common streets in Niantic
Meridian, Broadway, Eldorado, Montgomery, Illinois, North, Lake, Main, Lewis, Martha
Frequently asked questions
What ZIP codes are in Niantic, IL?
Niantic, Illinois has 1 ZIP code, ranging from 62551 to 62551. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Niantic, IL in?
Niantic is in Macon county.
What are the latitude and longitude of Niantic, IL?
The approximate center of Niantic, Illinois is latitude 39.853, longitude -89.158. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Niantic, IL have?
Niantic has 1 ZIP code.
How many addresses are in Niantic, IL?
Niantic, Illinois has about 3,760 known street addresses in the sthan.io US address database.
What are the most common streets in Niantic, IL?
Some of the most common street names in Niantic are Meridian, Broadway, Eldorado, Montgomery, Illinois, North.
What cities are near Niantic, IL?
Cities near Niantic include Harristown (3 mi), Illiopolis (5 mi), Boody (8 mi), Latham (8 mi), Mount Auburn (8 mi).
Cities near Niantic
Harristown, IL (3 mi) Illiopolis, IL (5 mi) Boody, IL (8 mi) Latham, IL (8 mi) Mount Auburn, IL (8 mi) Warrensburg, IL (8 mi) Blue Mound, IL (9 mi) Decatur, IL (10 mi)
Need this for any US address, in code?
Get the ZIP code, county, and coordinates for any US address through the sthan.io API. Free 100 requests/month, no credit card required.
View the API →Last updated: June 2026 · Data: sthan.io US address database