73503 ZIP Code — Fort Sill, OK

Comanche County, Oklahoma

ZIP code 73503 is located in Fort Sill, Oklahoma, within Comanche County. It covers approximately 74.19 square miles and serves a population of 11,528 residents. This is a po box ZIP code in the Central (CT) timezone, served by area code 580.

About ZIP code 73503

The housing stock consists of a mix of housing types. Most homes were built in the 2000s, giving the area an established character.

Median household income is $52,215.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 10 minutes is near the national average. Remote work is prevalent — 55% of workers work from home.

Educational attainment is near the national average, with 30% of residents holding a bachelor's degree or higher.

Notable community characteristics include a notable veteran presence at 24% of civilians, above the national average of 7%.

Overall, ZIP code 73503 reflects a community defined by a strong veteran community and a high rate of remote workers.

11,528

population

74.19

sq mi land

PO Box

ZIP type

Central (CT)

timezone

73503 ZIP code map

Cities in ZIP code 73503

Below are the cities the US Postal Service accepts for ZIP code 73503. Using any city not on this list may result in mail delivery delays.

City	Status
Fort Sill	Acceptable
Fort Sill	Preferred

Nearby ZIP codes

73507 Lawton (5.1 mi) 73505 Lawton (7.4 mi) 73538 Elgin (7.7 mi) 73501 Lawton (10.6 mi) 73527 Cache (11.2 mi) 73541 Fletcher (13.7 mi) 73543 Geronimo (14.3 mi) 73006 Apache (16 mi) 73029 Cyril (18 mi)

Demographics updated 05/2026

Population
Total population	11,528
Population density	155 / sq mi
State FIPS	40
County FIPS	031

Geography
Land area	74.19 sq mi
Water area	0.13 sq mi
Latitude	34.6811
Longitude	-98.4034
Timezone	Central (CT)
Area code	580

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	48.7%	47.2%	46.5%
$50k – $100k	34.3%	32.1%	31.0%
$100k – $200k	16.3%	17.8%	18.1%
Over $200k	0.8%	2.9%	4.5%

Demographics & statistics

11,528

Population

155

People per sq mi

20.8

Median age

$52,215

Median household income

$20,414

Per capita income

Median home value

$1,246

Median monthly rent

0.0%

Home ownership

9.1%

Poverty rate

4.7%

Unemployment

Housing units

30.2%

Bachelor's or higher

Age distribution

Male Female

855

Under 5

524

697

5–9

427

389

10–14

238

1,226

15–19

752

1,651

20–24

1,013

1,622

25–34

995

457

35–44

281

136

45–54

55–59

60–64

← Male

Female →

Age summary

Group	Count	%
Under 18	3,475	30.1%
18 and over	8,053	69.9%
65 and over	0	0.0%
Median age	20.8 years

Race & ethnicity

White 60.3%

Black or African American 15.2%

Two or more races 12.6%

Hispanic or Latino 5.2%

Asian 3.6%

Other race 1.9%

American Indian / Alaska Native 0.9%

Native Hawaiian / Pacific Islander 0.2%

Group	Count	%
White	7,332	60.3%
Black or African American	1,847	15.2%
Two or more races	1,534	12.6%
Hispanic or Latino	626	5.2%
Asian	436	3.6%
Other race	236	1.9%
American Indian / Alaska Native	114	0.9%
Native Hawaiian / Pacific Islander	29	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	48.7%	47.2%	46.5%
$50k – $100k	34.3%	32.1%	31.0%
$100k – $200k	16.3%	17.8%	18.1%
Over $200k	0.8%	2.9%	4.5%

Under $10k 3.9%

$15k–$25k 2.1%

$25k–$35k 10.8%

$35k–$50k 27.0%

$50k–$75k 28.9%

$75k–$100k 8.7%

$100k–$150k 13.7%

$150k–$200k 3.3%

$200k+ 1.7%

Range	% of households
Under $10k	3.9%
$15k–$25k	2.1%
$25k–$35k	10.8%
$35k–$50k	27.0%
$50k–$75k	28.9%
$75k–$100k	8.7%
$100k–$150k	13.7%
$150k–$200k	3.3%
$200k+	1.7%
Median income	$52,215

Housing

Home values

Housing overview

Metric	Value
Median home value	$0
Median rent / month	$1,246
Owner occupied	0.0%
Renter occupied	100.0%
Vacant	3.7%
Single-family detached	22.1%
Large apartment buildings	0.6%
Mobile homes	0.0%
Median rooms	6.4
Avg household size (owned)	0.00

Year built

Era	%
2020 or later	0.0%
2010–2019	19.7%
2000–2009	20.0%
1990–1999	13.6%
1980–1989	6.8%
1970–1979	9.8%
1960–1969	5.7%
1950–1959	5.2%
1940–1949	2.2%
1939 or earlier	16.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.3%
1 bedroom	0.6%
2 bedrooms	1.8%
3 bedrooms	48.8%
4 bedrooms	46.3%
5+ bedrooms	2.2%

Vehicles per household

Vehicles	% of households
No vehicle	0.4%
1 vehicle	28.3%
2 vehicles	60.7%
3 or more	10.7%

Heating fuel

Fuel type	%
Utility gas	33.1%
Electricity	62.1%
Propane / LP gas	2.1%
No fuel used	2.7%

Households & families

Household type	Count	%
Married-couple family	1,421	81.4%
Cohabiting couple	8	0.5%
Male householder, no spouse	131	7.5%
Female householder, no spouse	186	10.7%
Households with children under 18	1,323	75.8%
Households with seniors (65+)	0	0.0%
Average household size	3.81

Marital status

Status	Male	Female
Never married	60.9%	39.0%
Married	36.0%	57.4%
Separated	0.9%	0.4%
Widowed	0.0%	0.0%
Divorced	2.3%	3.2%

Education

Less than 9th grade 0.0%

Some HS, no diploma 0.1%

HS graduate 20.5%

Some college, no degree 38.8%

Associate's degree 10.4%

Bachelor's degree 17.4%

Graduate / professional 12.9%

Metric	%
HS diploma or higher	99.9%
Bachelor's or higher	30.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	297	9.8%
Kindergarten	236	7.8%
Elementary school	1,355	44.9%
High school	375	12.4%
College / grad school	753	25.0%

Employment

Industry of employment

Education & healthcare 23.7%

Public administration 22.4%

Retail trade 13.7%

Arts, food & hospitality 6.6%

Other services 6.3%

Professional & management 6.0%

Transportation & utilities 5.8%

Manufacturing 4.9%

Wholesale trade 4.1%

Information 2.8%

Finance & real estate 2.4%

Construction 1.3%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	41.3%
Service	20.5%
Sales & office	23.5%
Natural resources & construction	5.6%
Production & transportation	9.2%

Employment type

Type	%
Private sector	54.9%
Government	38.8%
Self-employed	6.0%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	39.0%
Carpool	3.0%
Public transit	1.8%
Walk	1.5%
Work from home	54.7%
Other means	0.0%
Avg commute (minutes)	10.2

Poverty

All people 9.1%

Under 18 years 12.3%

18 and over 6.0%

Married-couple families 5.1%

Female-led households 37.4%

Income support

Source	% of households
Social Security	2.9%
Retirement income	4.5%
Supplemental Security	0.8%
Cash public assistance	1.9%
Food stamps / SNAP	2.4%

Health indicators

Condition	%
Obesity	33.0%
High blood pressure	18.9%
High cholesterol	15.3%
Diabetes	3.2%
Heart disease	1.5%
Stroke	0.9%
Asthma	10.5%
Arthritis	6.9%
Kidney disease	1.1%
Pulmonary disease	2.9%
Cancer	1.1%

Behavior / access	%
Smoking	17.9%
Binge drinking	18.6%
No physical activity	24.9%
Less than 7 hrs sleep	37.9%
Depression	25.1%
Fair or poor health	11.3%
Poor mental health	20.0%
Poor physical health	6.9%
No health insurance	21.9%
Visited doctor (checkup)	68.0%
Visited dentist	51.6%
Cholesterol screening	72.2%
Teeth loss	16.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	541	24.1%

Disability	%
Any disability	6.0%
Under 18	3.6%
18–64 years	10.2%
65 and over	0.0%

Health insurance coverage

Type	%
Private insurance	95.5%
Public insurance	10.8%
No insurance	1.8%
Uninsured under 19	1.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	10,149	88.0%
Spanish	414	4.1%
Other Indo-European	195	1.9%
Asian & Pacific Islander	110	1.1%
Other languages	108	1.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	10,970	95.2%
Born in same state	10,597	91.9%
Born in different state	1,140	9.9%
Foreign born	373	3.2%
Naturalized citizen	558	4.8%
Not a US citizen	270	48.4%

Ancestry

Ancestry	Count	%
Italian	1,302	11.3%
Arab	586	5.1%
French	360	3.1%
Polish	195	1.7%

Ancestry	Count	%
English	163	1.4%
German	54	0.5%
Irish	13	0.1%
Norwegian	6	0.1%

Technology access

Metric	% of households
Computer access	15.1%
Internet access	100.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions about ZIP code 73503

What city is ZIP code 73503 in?

ZIP code 73503 is primarily assigned to Fort Sill, Oklahoma.

What county is ZIP code 73503 in?

ZIP code 73503 falls within Comanche County, Oklahoma.

Is ZIP code 73503 family-oriented?

30% of residents in ZIP code 73503 are under 18, reflecting a younger, family-oriented community.

Does ZIP code 73503 have a large veteran population?

24% of civilians in ZIP code 73503 are veterans, above the national average of ~7%.

What is the population of ZIP code 73503?

ZIP code 73503 has an estimated population of 11,528 residents, with a density of 155 people per square mile.

What is the median household income in ZIP code 73503?

The median household income in ZIP code 73503 is $52,215, below the national median of ~$75,000.

What timezone is ZIP code 73503 in?

ZIP code 73503 observes the CST timezone.