| Business | Phone |
| Becker County Assessor 913 Lake Ave, Detroit Lakes 56501 | (218) 846-7300 |
| Becker County Auditor 915 Lake Ave, Detroit Lakes 56501 | (218) 846-7301 |
| Becker County Delinquent Tax 915 Lake Ave, Detroit Lakes 56501 | (218) 846-7227 |
| Becker County Treasurer Office 913 Lake Ave, Detroit Lakes 56501 | (218) 846-7311 |