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The 20830 ZIP Code is centered1 in Montgomery County at latitude 39.159 and longitude -77.076 (Panoramio Photos). It is a PO Box type ZIP Code. Montgomery County is in the Eastern Time Zone (UTC -5 hours) and observes daylight savings time.
Olney, MD 20830 Map (Marker is ZIP Code Centroid)
Local Search, 20830 ZIP Code| Distance & Driving Directions
Nearby Cities, Towns & Census Designated Places
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Olney, MD
(< 0.1 mile) Oakdale, MD (1.9 miles S) Brookeville, MD (1.9 miles NNE) Mount Zion, MD (2.4 miles NW) Sandy Spring, MD (2.7 miles ESE) |
Sycamore Acres, MD
(3.1 miles SSW) Ashton, MD (3.4 miles ESE) Norbeck, MD (3.4 miles S) Brinklow, MD (3.4 miles E) Claysville, MD (3.6 miles NW) |
Nearby Neighborhoods, Subdivisions & Other Small Populated Places
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Avenel, MD
(< 0.1 mile) Towne Centre Place, MD (< 0.1 mile) Williamsburg Village, MD (< 0.1 mile) Tanterra, MD (< 0.1 mile) Olney Oaks, MD (< 0.1 mile) |
Olney Square, MD
(< 0.1 mile) Olney Town, MD (< 0.1 mile) Camelback Village, MD (< 0.1 mile) Briars Acres, MD (< 0.1 mile) Brookeville Knolls, MD (< 0.1 mile) |
ZIP Codes - Key Concepts
- ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
- The centroid of a ZIP Code may be in one County and the associated city/town in another.
- In rural areas, a single ZIP Code may be used for cities and towns in several different Counties / Independent Cities.
- ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
- ZIP Codes are only loosely tied to cities.
1 Keeping the above key concepts in mind, what we informally refer to as the "center" of a ZIP Code is most often actually the centroid of a polygon.
