Round Lake New York ZIP Codes
Round Lake holds a single ZIP code.
Every ZIP code in Round Lake
| ZIP code | County |
|---|---|
| 12151 | Saratoga County |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Round Lake codes above are listed without a column we would have to invent.
Scope every ZIP code recorded for Round Lake. Source GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . ZIP codes are delivery-route groupings, not areas; the boundaries implied by any ZIP map are approximations.
How these codes cluster
Every Round Lake ZIP code begins 121. Those first three digits identify the sectional center facility that processes mail for this part of New York. Statewide that range covers 73 ZIP codes, so Round Lake accounts for 1% of it.
Every New York ZIP prefix and the region it covers →
Area codes covering Round Lake
ZIP codes and area codes are separate systems — one routes mail, the other routes calls — and they do not share boundaries. The codes below serve the same ground Round Lake occupies.
Round Lake New York area codes in full →
Where Round Lake's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Cities near Round Lake
| City | Distance | ZIP codes |
|---|---|---|
| Ballston Spa New York ZIP codes | 5.6 mi | 1 ZIP code |
| Mechanicville New York ZIP codes | 5.9 mi | 1 ZIP code |
| Stillwater New York ZIP codes | 7.9 mi | 1 ZIP code |
| Saratoga Springs New York ZIP codes | 9.0 mi | 1 ZIP code |
| Schaghticoke New York ZIP codes | 11 mi | 1 ZIP code |
| Schenectady New York ZIP codes | 12 mi | 11 ZIP codes |
| Waterford New York ZIP codes | 12 mi | 1 ZIP code |
| Valley Falls New York ZIP codes | 12 mi | 1 ZIP code |
Straight-line distance between place reference points, not driving distance.