Horstmar
| Horstmar   | |
|---|---|
| Location of Horstmar   within Steinfurt   district | |
| Coordinates: 52°04′50″N 7°18′30″E / 52.08056°N 7.30833°E | |
| Country | Germany | 
| State | North Rhine-Westphalia | 
| Admin. region | Münster | 
| District | Steinfurt | 
| Government | |
| • Mayor (2020–25) | Robert Wenking (CDU) | 
| Area | |
|  • Total | 45 km2 (17 sq mi) | 
| Elevation | 77 m (253 ft) | 
| Population  (2023-12-31) | |
|  • Total | 7,301 | 
| • Density | 160/km2 (420/sq mi) | 
| Time zone | UTC+01:00 (CET) | 
| • Summer (DST) | UTC+02:00 (CEST) | 
| Postal codes | 48612 | 
| Dialling codes | 02558 | 
| Vehicle registration | ST | 
| Website | www.horstmar.de | 
Horstmar is a German town, located in North Rhine-Westphalia in the Steinfurt district, approx. 25 km (16 mi) north-west of Münster.