What city is 35603 in?

35603 is a Decatur, AL mailing address. By land area, 41% lies inside Decatur and 8% lies inside Priceville; the rest is outside any Census-defined city or community.

What is the population of 35603?

About 32,179 people (±1,581), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 32,380.

What is the median household income in 35603?

$81,490 (±$7,437), compared with $63,999 for Alabama as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 35603?

25 USPS carrier routes with 14,397 residential and 607 business mailboxes (14,934 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 35603?

The closest, measured center to center: 35601 (5.3 mi, Decatur), 35640 (6.7 mi, Hartselle), 35649 (8.4 mi, Mooresville), 35671 (9.3 mi, Decatur), 35673 (10.1 mi, Trinity) and 35615 (10.3 mi).

35603 ZIP Code, Decatur, AL

35603 is a ZIP code in Decatur, Alabama in Morgan County. It covers 71 square miles of land. The closest ZIP codes are 35601, 35640 and 35649. 32,179 people live here in 13,175 households, more than in 9 of every 10 Alabama ZIP codes. With about 453 people per square mile it is lightly settled, and most homes are owner-occupied (74%). Median household income is $81,490, above the Alabama median of $63,999.

Quick facts

Mailing city: Decatur, AL
County: Morgan County
Land area: 71 sq mi
Population: 32,179
Median household income: $81,490
Carrier routes: 25 (14,397 homes)

Key figures

Measure	Value
Residents	32,179
Households	13,175
Median household income	$81,490
Income per person	$42,141
Median age	42
Homeowners	73.9%
Median home value	$247,400
Median rent	$910
Bachelor's degree or higher	28.3%
Average commute (minutes)	22.9
Households with kids under 18	26.3%
Moved in the past year	8.4%
Below the poverty line	7.3%
Broadband internet	89.3%
Speak a non-English language at home	7.5%

Household income

% of households	Value
<$10K	3.8%
$10–15K	3.2%
$15–25K	6.0%
$25–35K	8.0%
$35–50K	8.5%
$50–75K	15.3%
$75–100K	13.9%
$100–150K	19.8%
$150–200K	11.4%
$200K+	10.2%

Age

% of all residents	Value
<10	13.5%
10–19	12.2%
20–24	4.3%
25–34	10.4%
35–44	13.4%
45–54	11.7%
55–64	14.1%
65–74	11.5%
75+	9.0%

Tenure

% of housing units	Value
Owned, with mortgage	39.4%
Owned outright	29.3%
Rented	23.7%
Vacant	7.6%

Type of building

% of housing units	Value
Detached house	69.4%
Townhome	5.3%
2–4 units	2.4%
5–19 units	13.7%
20+ units	4.5%
Mobile / other	4.9%

Businesses in 35603

500 business establishments with 8,299 employees (ZIP Codes Business Patterns 2023).

Retail Trade: 81
Health Care and Social Assistance: 76
Construction: 63
Other Services (except Public Administration): 52
Accommodation and Food Services: 50
Finance and Insurance: 38
Professional, Scientific, and Technical Services: 30
Wholesale Trade: 22

EDDM carrier routes

35603 has 25 USPS carrier routes with 14,397 residential and 607 business mailboxes. Open the EDDM route map.

Carrier routes in 35603

35603 has 25 USPS carrier routes (9 city (C), 16 rural (R)) with 14,397 residential and 607 business mailboxes. Routes range from 159 homes (C042) to 933 homes (C030); the median route has 559 homes. The Census counted 13,175 households in 35603 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	1
250–499	6
500–749	16
750–999	2
1,000–1,499	0
1,500+	0

Best routes in 35603 for…

Most businesses

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

Route R004 — USPS business mailboxes 134, 391 homes
Route C025 — USPS business mailboxes 110, 611 homes
Route R018 — USPS business mailboxes 100, 656 homes
Route R008 — USPS business mailboxes 80, 741 homes
Route C036 — USPS business mailboxes 69, 749 homes

Select these 5 routes on the route map

Every carrier route in 35603

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C012	City	651	2	$69,089	—	—	—
C024	City	561	0	$70,701	—	—	—
C025	City	611	110	$26,649	—	—	—
C030	City	933	5	$50,031	—	—	—
C032	City	507	5	$87,457	—	—	—
C033	City	855	0	$69,089	—	—	—
C034	City	526	1	$161,684	—	—	—
C036	City	749	69	$161,684	—	—	—
C042	City	159	1	$87,457	—	—	—
R002	Rural	493	18	$85,770	—	—	—
R003	Rural	532	5	$107,533	—	—	—
R004	Rural	391	134	$85,908	—	—	—
R005	Rural	486	14	$69,089	—	—	—
R006	Rural	744	20	$77,529	—	—	—
R007	Rural	450	9	$87,754	—	—	—
R008	Rural	741	80	$27,922	—	—	—
R009	Rural	559	0	$105,043	—	—	—
R010	Rural	535	2	$93,719	—	—	—
R011	Rural	464	2	$85,770	—	—	—
R012	Rural	574	4	$70,701	—	—	—
R014	Rural	634	9	$69,089	—	—	—
R015	Rural	501	9	$85,908	—	—	—
R016	Rural	474	4	$112,083	—	—	—
R017	Rural	611	4	$64,487	—	—	—
R018	Rural	656	100	$77,529	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 35603 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

35601 — Decatur city, AL (5.3 mi)
35640 — Hartselle city, AL (6.7 mi)
35649 — Mooresville town, AL (8.4 mi)
35671 — Decatur city, AL (9.3 mi)
35673 — Trinity town, AL (10.1 mi)
35615 (10.3 mi)
35756 — Huntsville city, AL (11.5 mi)
35622 — Falkville town, AL (13.7 mi)

Areas that include 35603

Where it ranks

Mail every home in 35603

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) 35603, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 35603 in?: 35603 is a Decatur, AL mailing address. By land area, 41% lies inside Decatur and 8% lies inside Priceville; the rest is outside any Census-defined city or community.
What county is 35603 in?: 35603 is in Morgan County.
What is the population of 35603?: About 32,179 people (±1,581), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 32,380.
What is the median household income in 35603?: $81,490 (±$7,437), compared with $63,999 for Alabama as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 35603?: 25 USPS carrier routes with 14,397 residential and 607 business mailboxes (14,934 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 35603?: The closest, measured center to center: 35601 (5.3 mi, Decatur), 35640 (6.7 mi, Hartselle), 35649 (8.4 mi, Mooresville), 35671 (9.3 mi, Decatur), 35673 (10.1 mi, Trinity) and 35615 (10.3 mi).

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