🇺🇸 United States ZIP Code

STANDARD

87421

Waterflow

ZIP Code 87421 is a standard zip code serving Waterflow, Waterflow, New Mexico (NM), in San Juan County, United States. It has an estimated population of 1,871 with a median household income of $50,833. The area falls within the America/Denver timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: New Mexico (NM)
County: San Juan
City: Waterflow
Timezone: America/Denver

Coordinates

Latitude: 36.763700
Longitude: -108.518600

Geographic Details

Land Area: 40.03 mi²
Water Area: 2.43 mi²
Population Density: 47.0 people per mi² (35th percentile)
Bounding Box: 36.811397°N, 36.645099°S, -108.439798°E, -108.634222°W

With 1,871 residents spread across 40.03 square miles, this area has a population density of 47.0 people per square mile.

Demographics

1,871

Population

40th percentile

$50,833

Median Income

55th percentile

$112,500

Median Home Value

40th percentile

40.03 mi²

Land Area

The median household income in 87421 is $50,833, and the median home value is $112,500.

Housing

609

Total Units

556

Occupied Units

91.3%

Occupancy Rate

Similar ZIP Codes in New Mexico

ZIP codes with similar median household income in New Mexico.

88008

Santa Teresa

$47,937

88007

Las Cruces

$48,582

87001

Algodones

$45,441

88337

La Luz

$46,996

88220

Carlsbad

$48,720

87410

Aztec

$54,649

88201

Roswell

$47,730

87417

Kirtland

$49,055

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.