Zip Code 66031 — New Century, KS
66031 is a ZIP Code associated with New Century, KS, located within Johnson. 66031 ranks #31 out of 32 ZIP codes in Johnson County by population (and #411 out of 704 in KS). The area supports an estimated population of 655 residents across Data Pending housing units, with a population density of 77.5 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (38.829750, -94.891420)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 66031 |
| Primary City | New Century |
| State / Province | KS |
| County | Johnson |
| Total Population | 655 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 77.5 people/sq mi |
| Timezone | America/Chicago |
How 66031 Compares
| Metric | ZIP 66031 | Johnson County | KS State Average |
|---|
| Population | 655 | 611,320 (Total) | 2,947,026 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 77.5 /sq mi | -- | -- |
| County Pop Rank | #31 of 32 | -- | -- |
Nearby ZIP Codes
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →