Area Code 646
New York
Area code 646 serves New York, primarily New York, in the Eastern Time (ET) time zone. It is an overlay area code sharing territory with area code 212.
Published: Verified against NANPA and FCC records
Overlay Area Code
This area code shares its geographic footprint with an overlay code, so the same cities are served by two area codes. Because overlays leave existing numbers untouched, this region's relief planning favors adding codes over redrawing boundaries.
The codes serving this same region: area code 212 (New York).
With prefix utilization already at 97.6%, numbering resources here are under sustained pressure — context that explains why overlays were introduced.
In service since: 01-Jul-1999
Demographics & Economics
- Total Population
- 1,617,259
- Population Density
- 71,917 people/sq miabove U.S. average (U.S.: 95 people/sq mi)
- Median Household Income
- $103,931above U.S. median (U.S.: $80,734)
- Poverty Rate
- 16.5%above U.S. average (U.S.: 12.5%)
- Unemployment Rate
- 7.6%above U.S. average (U.S.: 5.2%)
- Education Attainment
- Bachelor's Degree+64.2%above U.S. average (U.S.: 35.7%)High School or Lower17.7%
Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.
See how this area code compares to all US area codes in the income ranking and density ranking.
Time Zone
- Eastern Time (ET)
NANPA Relief Status
According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.
Source: NANPA NPA Relief Planning Reports · See all relief planning statuses
Current Time
Prefix Utilization
Geographic Coverage
State
NY
Major Cities
- New York
- Bellerose Terrace
- New York City
History
Area code 646 serves as an overlay for the same territory as area code 212. It was introduced in 1999 to provide additional phone number capacity for the region. It shares its territory with area codes area code 212 and area code 332 and area code 917.
Demographics
The estimated population served by area code 646 is approximately 1,617,259. The population density is 71,917 people per square mile, which is higher than the national average of 95. The median household income is $103,931, which is higher than the national median of $80,734. Approximately 64.2% of adults hold a bachelor's degree or higher, compared to the national rate of 35.7%. This rate is higher than the national average. The poverty rate stands at 16.5%, which is higher than the national rate of 12.5%.
County Coverage
Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 646).
| County | Population | Share |
|---|---|---|
| New York, NY | 1,617,259 | 100.0% |
Area Code 646 Family Tree
Hover over nodes to see details. Click to navigate to individual area code pages. Use scroll to zoom, drag to pan.
Area code 646 was originally assigned in 01-Jul-1999 to serve NY.
Call Context
This area code covers a geographic region across NY, including New York and surrounding communities.
Nearby Area Codes
Area codes geographically closest to 646.
Other Area Codes in New York
Area codes that also serve New York, linked for easy comparison.