ZIP Code 20689: Sunderland, MD
County: Calvert
Coordinates: 38.64900, -76.57670
ZIP Type: Standard
Time Zone: Eastern Time (ET)
Explore detailed information for ZIP code 20689 in Sunderland, MD. We include verified county details for Calvert plus key geographic references used for mapping and logistics.
| Primary City | Sunderland |
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| ZIP Code | 20689 |
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| County | Calvert |
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| State | MD |
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| Latitude / Longitude | 38.64900, -76.57670 |
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| ZIP Type | Standard |
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| Time Zone | Eastern Time (ET) |
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| Data Updated | 2026-01-08 |
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Maps & Useful Links
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These links show the approximate center point for ZIP 20689 (not an exact boundary).
Geographic & Administrative Context
The geographic center of ZIP code 20689 is approximately 38.64900 (latitude) and -76.57670 (longitude). This location sits within Calvert, contributing to regional planning across MD.
Local Coverage Notes
ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 20689 for mail delivery and general location reference in
Calvert,
MD.
Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Sunderland.
Related ZIP Codes (Nearby)
Explore other postal codes near Sunderland within MD.
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Frequently Asked Questions
What is the primary city for ZIP code 20689?
The primary city for this ZIP code is Sunderland, located in MD.
In which county is 20689 located?
ZIP code 20689 is situated within Calvert, MD.
What are the coordinates for 20689?
The approximate center point is 38.64900 (Latitude) and -76.57670 (Longitude).
Is ZIP code 20689 active?
This page lists ZIP 20689 as Listed based on the latest refresh date shown above.
Does ZIP 20689 cover multiple areas?
Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.
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Methodology & Data Notes
How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.
Page updated: 2026-01-08