| Official Name: | Deer River, New York |
| Pushpin Map: | New York#USA |
| Pushpin Label: | Deer River |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | New York |
| Subdivision Type2: | County |
| Subdivision Name2: | Lewis |
| Subdivision Type3: | Town |
| Subdivision Name3: | Denmark |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 781 |
| Coordinates: | 43.9297°N -75.5892°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 13627 |
| Area Code: | 315 & 680 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 948232 |
Deer River is a hamlet in the town of Denmark, Lewis County, New York, United States. The community is located along the Deer River and New York State Route 26, south-southeast of Carthage and west of the Deer River's confluence with the Black River. Deer River had a post office from September 19, 1845, until June 4, 1994; it still has its own ZIP code, 13627.[1] [2]