| Marydel, Delaware | |
| Settlement Type: | Unincorporated community |
| Other Name: | Halltown |
| Pushpin Map: | USA Delaware#USA |
| Pushpin Map Caption: | Location within the state of Delaware |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Delaware |
| Subdivision Type2: | County |
| Subdivision Name2: | Kent |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Population Density Km2: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 39.1122°N -75.7444°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 19964 |
| Area Code: | 302 |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 214279[1] |
Marydel (also called Halltown) is an unincorporated community in Kent County, Delaware, United States.[2] It lies along Delaware Route 8 west of the city of Dover, the county seat of Kent County and Delaware's state capital. Because the community has borne multiple names, the Board on Geographic Names officially designated it "Marydel" in 1897. It has a post office with the ZIP code 19964.[3] The post office is shared with Marydel, Maryland (ZIP code 21649) and is located in Maryland.
As part of the Mason–Dixon line, Marydel is home to Crownstone #45.