Essex, IA 51638 ZIP Code Profile

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Essex, IA

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ZIP Code 51638: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Essex, IA 51638

  • ZIP Code Type: STANDARD
  • County: Page County
  • Centroid: Latitude 40.835, Longitude -95.302
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 51638 has segments in 2 Counties (Montgomery, Page).

  • Businesses Addresses: 29
  • PO Box Addresses: 227
  • Residential Addresses: 329
    • Multi-Family Addresses: 34
    • Single Family Addresses: 295

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic 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 demographic data.


51638 ZIP Code Map

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Essex, IA 51638 Data & Demographics (As of July 1, 2017)


Total Population 1,302
Daytime Population: Workers 268
Daytime Population: Residents 667
Total Daytime Population (TDP) 935
Ratio TDP/Total Population1 0.72
Population in Households 1,302
Population in Familes 1,102
Population in Group Qrtrs 0
Population Density2 16
Diversity Index3 8


Median Household Income $50,607
Average Household Income $64,422
Per Capita Income $26,966


Total Housing Units 610 (100%)
Owner Occupied HU 418 (68.5%)
Renter Occupied HU 127 (20.8%)
Vacant Housing Units 65 (10.7%)
Median Home Value $84,821
Average Home Value $132,955


Total Households 545
Average Household Size 2.39
Family Households 388
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 0.12% -0.06%
Households 0.13% -0.11%
Families -0.04% -0.16%
Median Household Income   1.98%
Per Capita Income   2.51%

Essex, IA 51638 - Peer Comparisons by Rank and Percentile

The table below compares 51638 to the other 963 ZIP Codes in Iowa 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 # 400 58th
Population Density # 618 36th
Diversity Index # 594 39th
Median Household Income # 662 31st
Per Capita Income # 590 39th

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

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