Ilchester, MD ZIP codes

2 ZIP/ZCTAs intersecting this Census place (CDP) in Howard County.

ACS 2023 population

27,552

Median household income

$150,783

Median home value

$498,500

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Ilchester (GEOID 2441475). Methodology

Combined population of ZIP/ZCTAs intersecting this place: 84,280 (2 ZIPs).

Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology

Map of Ilchester, MD

Census place boundary and intersecting ZIP Code Tabulation Areas for Ilchester, MD — Census place boundary for Ilchester, MD. Intersecting ZCTAs may extend past the city limit. Not a USPS city limit. Boundaries: U.S. Census Bureau. Methodology · Data sources

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ZIP/ZCTA overlap with Ilchester

Population overlap

Share of each ZIP/ZCTA’s population located within Ilchester, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

2104326.7%
2107538.4%

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

ZIP codes intersecting Ilchester

ZIP	City	County	Population	Income
21043	Ellicott City	Howard County	47,134	$141,846
21075	Elkridge	Howard County	37,146	$133,321