Manchester, MD 21102 ZIP Code Profile

Related Place Profiles:
Lineboro, MD | Manchester, MD | Millers, MD

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ZIP Code 21102: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Manchester, MD 21102

Acceptable Alternative
Lineboro, MD 21102
Millers, MD 21102

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 200
  • Single Family Addresses: 4,007
  • Multi-Family Addresses: 0
  • County: Carroll County
  • Centroid: Latitude 39.644, Longitude -76.696
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

ZIP Code 21102 has segments in 2 Counties / Independent Cities (Baltimore, Carroll).

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


21102 ZIP Code Map

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Manchester, MD 21102 Data & Demographics (As of July 1, 2017)


Total Population 12,548
Daytime Population: Workers 2,204
Daytime Population: Residents 5,781
Total Daytime Population (TDP) 7,985
Ratio TDP/Total Population1 0.64
Population in Households 12,453
Population in Familes 11,027
Population in Group Qrtrs 95
Population Density2 300
Diversity Index3 17


Median Household Income $86,788
Average Household Income $101,860
Per Capita Income $35,458


Total Housing Units 4,537 (100%)
Owner Occupied HU 3,736 (82.3%)
Renter Occupied HU 598 (13.2%)
Vacant Housing Units 203 ( 4.5%)
Median Home Value $331,356
Average Home Value $368,001


Total Households 4,334
Average Household Size 2.87
Family Households 3,445
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.9% 0.73%
Households 0.87% 0.72%
Families 0.8% 0.65%
Median Household Income   1.48%
Per Capita Income   2.42%

Manchester, MD 21102 - Peer Comparisons by Rank and Percentile

The table below compares 21102 to the other 456 ZIP Codes in Maryland by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 164 64th
Population Density # 255 45th
Diversity Index # 385 16th
Median Household Income # 177 61st
Per Capita Income # 236 48th

Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.

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