98230 ZIP Code Profile, Map, Data & Demographics

Related Place Profiles:
Birch Bay, WA | Blaine, WA

ZIP Code 98230: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Blaine, WA 98230

Not Acceptable, USPS
Birch Bay, WA 98230

  • ZIP Code Type: STANDARD
  • County: Whatcom County
  • Centroid: Latitude 48.962, Longitude -122.743
  • Time Zone: Pacific Time Zone (UTC -8 hours)
  • Observes DST: Yes
  • Businesses Addresses: 454
  • PO Box Addresses: 0
  • Residential Addresses: 9,071
    • Multi-Family Addresses: 342
    • Single Family Addresses: 8,729

The ZIP Code maps and database are updated 4 times per year.
Database updated: July 1, 2023, Maps updated: May 3, 2023.


Blaine, WA 98230 Data & Demographics (As of July 1, 2023)


Total Population 19,248 (100%)
Population in Households 19,186 (99.7%)
Population in Families 15,321 (79.6%)
Population in Group Quarters1 62 ( 0.3%)
Population Density 427
Diversity Index2 45


Median Household Income $80,615
Average Household Income $118,272
% of Income for Mortgage4 40%
Per Capita Income $49,617
Wealth Index5 136
Socioeconomic Status Index6 Moderate (49.3)


Total HU (Housing Units) 10,047 (100%)
Owner Occupied HU 6,284 (62.5%)
Renter Occupied HU 1,790 (17.8%)
Vacant Housing Units 1,973 (19.6%)
Median Home Value $534,361
Average Home Value $575,219
Housing Affordability Index3 63


Total Households 8,074
Average Household Size 2.38
Family Households 5,338
Average Family Size 3.00
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. 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 races 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.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.


2020-2023 2023-2028
Population 1.00% 0.58%
Households 1.40% 0.80%
Families   0.93%
Median Household Income   3.54%
Per Capita Income   4.01%
Owner Occupied HU   1.24%

Blaine, WA 98230 - Peer Comparisons by Rank and Percentile

The table below compares 98230 to the other 590 ZIP Codes in Washington by rank and percentile using July 1, 2023 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 # 184 69th
Population Density # 213 64th
Median Household Income # 232 61st
Housing Affordability Index # 179 30th
Per Capita Income # 156 74th
Diversity Index # 304 48th

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

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