Round Lake, NY ZIP Codes
2 ZIP codes serve Round Lake, New York: 12118 and 12151. Together they are home to 18,036 residents in 8,104 households. That is more than the 915 people counted inside Round Lake village limits, because these ZIP codes reach past its boundary.
Round Lake village limits (Census)
| Measure | Census figure |
|---|---|
| Residents | 915 |
| Households | 431 |
| Median household income | $97,868 |
| Median home value | $338,700 |
| Median age | 49.9 |
| Median rent | $1,615 |
All 2 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 18,036 |
| Households (sum of ZIP codes) | 8,104 |
| Median household income, range across ZIP codes | $92,710 (12118) to $92,710 (12118) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $92,710 |
| Homeowners | 69.9% |
| Households with kids under 18 | 27.6% |
| Moved in the past year | 8.4% |
| Carrier routes in EDDM2GO's route library | 11 routes, 7,978 homes (2 of 2 ZIP codes) |
Every ZIP code in Round Lake
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 12118 | Mechanicville | 17,069 | 7,651 | $92,710 | $345,800 | 68.9% | 27.8% | 8.6% | 10 | 8,016 | 0% of its land |
| 12151 | Round Lake | 967 | 453 | $98,309 | $342,800 | 86.3% | 24.7% | 5.3% | 1 | 230 | 39% of its land; mailing city |
A ZIP code is listed for Round Lake when at least 10% of its land lies inside Round Lake village limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Round Lake. The table shows which applies. Totals add up whole ZIP codes, so they include any parts outside Round Lake.
Counties
- Saratoga County — 26 ZIP codes
Nearby cities sharing these ZIP codes
- Mechanicville — 1 ZIP code
Price a mailing to Round Lake ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Round Lake, NY?
- 12118 and 12151. A ZIP code is listed for Round Lake when at least 10% of its land lies inside Round Lake village limits, when it holds at least 10% of the place's land, or when its USPS mailing city is Round Lake.
- What is the population of Round Lake, NY?
- The Census Bureau counts 915 residents inside Round Lake village limits (ACS 2020–2024). The 2 ZIP codes that serve Round Lake hold 18,036 residents in all.
- What is the median household income in Round Lake, NY?
- $97,868 inside Round Lake village limits, per the Census Bureau. Across its ZIP codes the medians run from $92,710 to $92,710.
- How many carrier routes and mailboxes are in Round Lake, NY?
- For the 2 of 2 ZIP codes in EDDM2GO's stored route library: 11 carrier routes reaching 7,978 residential and 275 business mailboxes.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.