ZIP 21158 · Westminster, Maryland

2026 Edition · 8 cards · data as of Oct 30, 2026

ALMANAC
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  1. Population

    22,083 people call ZIP 21158 home.

    22,083

    people.

    Census ACS 5-year, 2020-2024. Sources: Census ACS 5-year

  2. Rent

    Median rent is up 40% since the 2010–2014 survey, before inflation.

    $1,794

    a month. Maryland's median is $1,705.

    Census ACS 5-year, 2020-2024 (latest), with earlier 5-year windows. Sources: Census ACS 5-year

  3. Room to build

    The median rent is above what local wages can carry.

    $851–$1,277

    is the monthly rent range local workforce wages support.

    • $1,794 median

    Supportable rent computed by the Almanac from 2023 source wage data. Median rent: Census ACS 5-year, 2020-2024. Sources: Computed by the Almanac, Census ACS 5-year

  4. Building

    Most of the housing here is older than 2000.

    • 82% of all homes were built before 2000

    Census ACS 5-year, 2020-2024. Sources: Census ACS 5-year

  5. Units needed

    Closing the gap would add 0.2–0.4% to the 8,768 homes here.

    19–31

    is the estimated number of missing housing units, from the lowest to the highest of three estimates.

    Range computed by the Almanac from 2023 jobs and household data, using three demand models: 1% of jobs located here, 1% of renter households, and a rate by town size applied to renters. The low end is the lowest of the three and the high end the highest. It is an estimate, not a count. Sources: Computed by the Almanac

  6. Home value

    A median home costs 8% less than Maryland's.

    $384,700

    median home value in ZIP 21158.

    • $384,700 ZIP 21158
    • $419,900 Maryland
    • $332,700 U.S.

    Census ACS 5-year, 2020-2024. Sources: Census ACS 5-year

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