| Service | Phone Number |
| Property Taxes - Current | (302) 855-7871 |
| Property - Delinquent/Partial Payments | (302) 855-7831 |
| State 65/Over 65 and Disability Exemptions | (302) 855-7871 |
| Tax Liens and Bankruptcies | (302) 855-7871 |
| Special Community Liens | (302) 855-7871 |
| Fax Number - Treasury Division | (302) 854-5381 |
| Assessment Inquiries | (302) 855-7824 |
| Property Transfers and Manufactured Homes | (302) 855-7824 |
| Tax Maps | (302) 855-7822 |
| Fax Number - Assessment Office | (302) 855-7828 |
| Trailer Release Information | (302) 855-7720 |
| Building Permits | (302) 855-7720 |
| Sewer & Water - Footage Charges | (302) 855-7871 |
| Ditch Tax Information (Division of Soil & Water Conservation, Drainage Program) | (302) 855-1930 |
| Building Code | (302) 855-7860 |
| Clerk of the Peace | (302) 855-7835 |
| Community Development | (302) 855-7777 |
| Data Processing | (302) 855-7849 |
| Listings/Labels for Organizations | (302) 855-7849 |
| Purchasing of Assessment/Tax Files | (302) 855-7848 |
| Fax Number - Data Processing | (302) 855-7845 |
| Economic Development | (302) 855-7770 |
| Mapping | (302) 855-7827 |
| 911 Inquiries | (302) 855-1176 |
| Recorder of Deeds | (302) 855-7785 |
| Sheriff's Office | (302) 855-7830 |
| Sheriff Sales, Tax Sales and Foreclosures | (302) 855-7830 |
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