86004 ZIP Code, Flagstaff, AZ

86004 is a ZIP code in Flagstaff, Arizona in Coconino County. It covers 915 square miles of land. The closest ZIP codes are 86003, 86035 and 86011. 36,394 people live here in 14,794 households. It is rural, with fewer than 100 people per square mile, and owners and renters are mixed (63% own). Median household income is $81,172, close to the Arizona median of $79,964.

Quick facts

Key figures

MeasureValue
Residents36,394
Households14,794
Median household income$81,172
Income per person$43,358
Median age38.5
Homeowners62.8%
Median home value$509,900
Median rent$1,676
Bachelor's degree or higher44.0%
Average commute (minutes)18.2
Households with kids under 1829.3%
Moved in the past year13.1%
Below the poverty line11.8%
Broadband internet91.0%
Speak a non-English language at home19.8%

Household income

% of householdsValue
<$10K3.2%
$10–15K2.3%
$15–25K6.3%
$25–35K7.6%
$35–50K8.2%
$50–75K18.2%
$75–100K13.2%
$100–150K18.3%
$150–200K11.6%
$200K+11.0%

Age

% of all residentsValue
<1010.0%
10–1913.9%
20–246.9%
25–3414.4%
35–4414.5%
45–5412.6%
55–6411.9%
65–7410.3%
75+5.7%

Tenure

% of housing unitsValue
Owned, with mortgage34.5%
Owned outright21.4%
Rented32.6%
Vacant11.5%

Type of building

% of housing unitsValue
Detached house59.5%
Townhome8.4%
2–4 units6.6%
5–19 units9.5%
20+ units5.1%
Mobile / other10.9%

Businesses in 86004

1,202 business establishments with 14,247 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

86004 has 25 USPS carrier routes with 16,146 residential and 1,033 business mailboxes. Open the EDDM route map.

Carrier routes in 86004

86004 has 25 USPS carrier routes (10 city (C), 15 rural (R)) with 16,146 residential and 1,033 business mailboxes. Routes range from 303 homes (R025) to 1,133 homes (R015); the median route has 565 homes. The Census counted 14,794 households in 86004 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2490
250–4994
500–74913
750–9997
1,000–1,4991
1,500+0

Best routes in 86004 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

  1. Route C008 — USPS business mailboxes 145, 486 homes
  2. Route C027 — USPS business mailboxes 124, 543 homes
  3. Route R018 — USPS business mailboxes 123, 857 homes
  4. Route C010 — USPS business mailboxes 122, 868 homes
  5. Route R027 — USPS business mailboxes 99, 850 homes

Select these 5 routes on the route map

Every carrier route in 86004

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C005City76695$50,651———
C006City5866$107,630———
C008City486145$63,849———
C010City868122$35,700———
C015City5653$87,308———
C016City5654$124,447———
C020City71193$89,362———
C022City80590$73,093———
C027City543124$90,703———
C031City32840$63,849———
R001Rural6318$76,021———
R003Rural52510$109,886———
R005Rural8001$89,912———
R006Rural7237$99,496———
R008Rural4707$83,399———
R010Rural9253$89,912———
R011Rural5121$114,131———
R015Rural1,13335$99,496———
R017Rural5561$109,886———
R018Rural857123$61,581———
R021Rural5328$101,530———
R025Rural3032$89,912———
R026Rural5501$101,530———
R027Rural85099$83,399———
R029Rural5565$101,530———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 86004 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

Areas that include 86004

Where it ranks

Mail every home in 86004

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 86004, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 86004 in?
86004 is a Flagstaff, AZ mailing address. By land area, 3% lies inside Flagstaff, 2% lies inside Doney Park and 1% lies inside Timberline-Fernwood; the rest is outside any Census-defined city or community.
What county is 86004 in?
86004 is in Coconino County.
What is the population of 86004?
About 36,394 people (±1,645), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 38,451.
What is the median household income in 86004?
$81,172 (±$4,194), compared with $79,964 for Arizona as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 86004?
25 USPS carrier routes with 16,146 residential and 1,033 business mailboxes (17,232 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 86004?
The closest, measured center to center: 86003 (13.6 mi), 86035 (19.3 mi, Leupp), 86011 (20.7 mi, Flagstaff), 86001 (22.5 mi, Fort Valley) and 86005 (24.6 mi, Flagstaff).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.