PlainZIP

Preston, MD

Single-footprint Census roll-up for Preston, MD: 1 USPS ZIP, population 5,009. 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 PRESTON-MD · Preston, MD 1 ZIPs · 5,009 pop · #6332/25278 · Caroline County

INC-HIGH · RANK-UPPER · ABOVE-PEER · BOOK-ONE · OWN-MID · POP-TOWN · SPREAD-UNK · HOME-MID

  • INC-HIGH $90,385
  • RANK-UPPER #6332/25278
  • ABOVE-PEER over Ridgely
  • BOOK-ONE 1 ZIP
  • OWN-MID 84% owners
  • POP-TOWN 5,009
  • SPREAD-UNK Single-ZIP book
  • HOME-MID $289,200

Nearest income peer: Ridgely, MD ( $9,916 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 Preston

Lowest/highest poles plus county-sharing cities nearest Preston 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, Preston, MD sits among US cities with an upper-quartile household income, on a town-scale population base, across a single-ZIP footprint.

Top 25%
household income vs 25,278 US cities
5,009
city population (Census)
1
USPS ZIP codes covered
$90,385
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 $90,385 and home value $289,200 should be read as near-neighborhood numbers ; bachelor's attainment averages 24.0%.

Owner-occupancy sits in a mixed band (84.0%) - check the ZIP page's tenure split before treating Preston as a pure owner town.

Within Maryland, Ewell is the closest lower-income city and Rock Hall the closest higher-income city by average ZIP household income. Their 1 and 1 ZIP footprints are the immediate statewide comparison set for Preston.

Population concentration

Preston's single ZIP 21655 carries the town

Preston is published as a single USPS ZIP. Code 21655 is the entire residential footprint (5,009 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

Mid-pack ZBP load on Preston's one ZIP

Citywide ZBP: 91 establishments, 614 employees , annual payroll $45,260k (~18 establishments per 1,000 residents) across 1 of 1 ZIPs. Peak business ZIP 21655 (91 units) ; leading NAICS Construction (21) · also Professional, scientific, and technical services · Administrative and support and waste management and remediation services .

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ZIP Codes in Preston, MD

These ZIP codes sit in Caroline County, which covers 9 ZIP codes in all; 1 of them fall in Preston. See the Caroline County roll-up →

No other city sharing Caroline County reports a higher average ZIP median income than Preston. Denton, Federalsburg and Greensboro sit below it, so a household comparing this county on income alone starts here. Henderson marks the far end of that range at $53,558, 41% below Preston.

ZIP Code Population Median income Establishments Density
21655 5,009 $90,385 91 37
How we build city roll-ups · Guide: reading ZIP code data · BLS wages

Preston 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 Preston, .