PlainZIP

Glen Arm, MD

Single-footprint Census roll-up for Glen Arm, MD: 1 USPS ZIP, population 4,112. Open the primary ZIP for household income, housing tenure, and commute from ACS 2023 5-Year Estimates.

U.S. Census Bureau, SimpleMaps US ZIP Code Database, delivery-area ZIP coverage

ACS city ledger plate

Sheet GLEN-ARM-MD · Glen Arm, MD 1 ZIPs · 4,112 pop · #971/25278 · Baltimore County

INC-TOP · RANK-TOP · ABOVE-PEER · BOOK-ONE · OWN-HIGH · POP-VILLAGE · SPREAD-UNK · HOME-HIGH

  • INC-TOP $145,924
  • RANK-TOP #971/25278
  • ABOVE-PEER over Lutherville Timo
  • BOOK-ONE 1 ZIP
  • OWN-HIGH 85% owners
  • POP-VILLAGE 4,112
  • SPREAD-UNK Single-ZIP book
  • HOME-HIGH $623,200

Nearest income peer: Lutherville Timonium, MD ( $20,396 income $)

Instrument codes from this city’s ACS household income, national rank, county-peer gap, ZIP book, owner tenure, population scale, intra-city income spread, and home-value band, not a moving recommendation.

Income neighbourhood around Glen Arm

Lowest/highest poles plus county-sharing cities nearest Glen Arm on average ZIP median household income. Full ladder: /cities.

median HH income

What this shows County-sharing peers only, not the full US city board. Open a near peer when the gap is small; open the poles when the mosaic is wide.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2026-08-25

National city placement

According to ACS 5-Year Estimates, Glen Arm, MD sits among US cities with a top-decile household income, on a village-scale population base, across a single-ZIP footprint.

Top 4%
household income vs 25,278 US cities
4,112
city population (Census)
1
USPS ZIP codes covered
$145,924
avg ZIP median income

Income percentile ranks this city's average ZIP median household income against 25,278 US cities with ACS income on at least one ZIP. Scale and ZIP-spread words come from Census population and USPS ZIP coverage.

High-income footprint on only 1 ZIP: the city page and the ZIP page nearly coincide. Headline income $145,924 and home value $623,200 should be read as near-neighborhood numbers ; bachelor's attainment averages 54.0%.

Owner-occupancy here runs high (85.1%) - tenure is stable enough that the ZIP detail's owner share is the right next click, not a renter-heavy compare.

Within Maryland, Edgewater is the closest lower-income city and Cheltenham the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Glen Arm.

Population concentration

Glen Arm's single ZIP 21057 carries the town

Glen Arm is published as a single USPS ZIP. Code 21057 is the entire residential footprint (4,112 ACS residents), so the city page and the ZIP page tell the same household story, open that ZIP for income, tenure, and commute detail.

Census ZBP business roll-up

Dense ZBP book packed into Glen Arm's one ZIP

Citywide ZBP: 110 establishments, 879 employees , annual payroll $51,451k (~27 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 21057 (110 units) ; leading NAICS Construction (29) · also Professional, scientific, and technical services · Other services (except public administration) .

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ZIP Codes in Glen Arm, MD

These ZIP codes sit in Baltimore County, which covers 41 ZIP codes in all; 1 of them fall in Glen Arm. See the Baltimore County roll-up →

No other city sharing Baltimore County reports a higher average ZIP median income than Glen Arm. Baltimore, Parkville and Dundalk sit below it, so a household comparing this county on income alone starts here. Dundalk marks the far end of that range at $64,141, 56% below Glen Arm.

ZIP Code Population Median income Establishments Density
21057 4,112 $145,924 110 95
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Glen Arm roll-ups here are for informational purposes only and do not constitute financial or relocation advice. ACS and Census ZBP figures are estimates; confirm the current table against Census before a money or move decision involving Glen Arm, .