40203 ZIP Code — Louisville, KY

Jefferson County, Kentucky

ZIP code 40203 is located in Louisville, Kentucky, within Jefferson County. It covers approximately 2.90 square miles and serves a population of 17,964 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 502.

About ZIP code 40203

The housing stock consists of a significant share of large multi-unit buildings. Most homes were built in the pre-1940, giving the area an established character. Median home value is $158,000. Renters make up the majority at 78%, typical of denser urban areas.

Median household income is $30,739. Poverty affects 35% of residents, above the national average. SNAP benefit usage at 30% of households reflects economic stress in the area.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 22 minutes is near the national average.

Educational attainment is near the national average, with 23% of residents holding a bachelor's degree or higher.

Health indicators show elevated rates of obesity (47%), diabetes (19%), smoking (29%) compared to national benchmarks.

Notable community characteristics include disability rates above the national average at 30%.

Overall, ZIP code 40203 reflects a community defined by economic challenges above the national average and elevated reliance on food assistance.

17,964

population

2.90

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

40203 ZIP code map

Cities in ZIP code 40203

Below are the cities the US Postal Service accepts for ZIP code 40203. Using any city not on this list may result in mail delivery delays.

City	Status
Louisville	Preferred

Nearby ZIP codes

40041 Masonic Home (0.2 mi) 40287 Louisville (0.3 mi) 40280 Louisville (0.3 mi) 40296 Louisville (0.3 mi) 40293 Louisville (0.3 mi) 40289 Louisville (0.3 mi) 40225 Louisville (0.3 mi) 40266 Louisville (0.3 mi) 40294 Louisville (0.3 mi) 40281 Louisville (0.3 mi) 40282 Louisville (0.3 mi) 40283 Louisville (0.3 mi)

Demographics updated 05/2026

Population
Total population	17,964
Population density	6,194 / sq mi
State FIPS	21
County FIPS	111

Geography
Land area	2.90 sq mi
Water area	0.00 sq mi
Latitude	38.2514
Longitude	-85.7630
Timezone	Eastern (ET)
Area code	502

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	73.4%	42.4%	47.9%
$50k – $100k	18.4%	31.3%	30.3%
$100k – $200k	7.4%	20.3%	17.6%
Over $200k	0.8%	6.0%	4.2%

Demographics & statistics

17,964

Population

6,194

People per sq mi

38.1

Median age

$30,739

Median household income

$25,568

Per capita income

$158,000

Median home value

$777

Median monthly rent

22.5%

Home ownership

35.4%

Poverty rate

9.4%

Unemployment

3,833

Housing units

23.2%

Bachelor's or higher

Age distribution

Male Female

498

Under 5

483

348

5–9

337

379

10–14

368

602

15–19

584

804

20–24

779

1,665

25–34

1,613

1,154

35–44

1,119

1,307

45–54

1,267

610

55–59

592

601

60–64

583

682

65–74

661

268

75–84

260

203

85+

197

← Male

Female →

Age summary

Group	Count	%
Under 18	2,964	16.5%
18 and over	15,000	83.5%
65 and over	2,271	12.6%
Median age	38.1 years

Race & ethnicity

Black or African American 49.1%

White 43.4%

Two or more races 3.6%

Hispanic or Latino 2.2%

Other race 1.1%

Asian 0.5%

American Indian / Alaska Native 0.1%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
Black or African American	9,022	49.1%
White	7,972	43.4%
Two or more races	653	3.6%
Hispanic or Latino	402	2.2%
Other race	205	1.1%
Asian	83	0.5%
American Indian / Alaska Native	19	0.1%
Native Hawaiian / Pacific Islander	10	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	73.4%	42.4%	47.9%
$50k – $100k	18.4%	31.3%	30.3%
$100k – $200k	7.4%	20.3%	17.6%
Over $200k	0.8%	6.0%	4.2%

Under $10k 17.1%

$10k–$15k 13.2%

$15k–$25k 12.4%

$25k–$35k 12.3%

$35k–$50k 13.7%

$50k–$75k 13.8%

$75k–$100k 4.7%

$100k–$150k 8.2%

$150k–$200k 2.6%

$200k+ 2.0%

Range	% of households
Under $10k	17.1%
$10k–$15k	13.2%
$15k–$25k	12.4%
$25k–$35k	12.3%
$35k–$50k	13.7%
$50k–$75k	13.8%
$75k–$100k	4.7%
$100k–$150k	8.2%
$150k–$200k	2.6%
$200k+	2.0%
Median income	$30,739

Housing

Home values

Under $50k 10.7%

$50k–$100k 22.2%

$100k–$150k 13.3%

$150k–$200k 20.4%

$200k–$300k 14.3%

$300k–$500k 9.5%

$500k–$1M 6.8%

$1M+ 2.8%

Housing overview

Metric	Value
Median home value	$158,000
Median rent / month	$777
Owner occupied	22.5%
Renter occupied	77.5%
Vacant	16.2%
Single-family detached	29.1%
Large apartment buildings	28.8%
Mobile homes	0.8%
Median rooms	4.3
Avg household size (owned)	2.15

Year built

Era	%
2020 or later	0.4%
2010–2019	5.2%
2000–2009	4.7%
1990–1999	4.5%
1980–1989	6.3%
1970–1979	10.4%
1960–1969	8.2%
1950–1959	4.5%
1940–1949	10.2%
1939 or earlier	45.4%

Bedrooms

Size	% of units
No bedroom (studio)	11.1%
1 bedroom	30.4%
2 bedrooms	30.6%
3 bedrooms	22.1%
4 bedrooms	3.0%
5+ bedrooms	2.8%

Vehicles per household

Vehicles	% of households
No vehicle	34.7%
1 vehicle	46.4%
2 vehicles	15.1%
3 or more	3.9%

Heating fuel

Fuel type	%
Utility gas	49.1%
Electricity	47.7%
Propane / LP gas	1.4%
Wood	0.1%
No fuel used	0.8%

Households & families

Household type	Count	%
Married-couple family	1,231	13.4%
Cohabiting couple	685	7.5%
Male householder, no spouse	3,317	36.2%
Female householder, no spouse	3,929	42.9%
Households with children under 18	1,648	18.0%
Households with seniors (65+)	1,779	19.4%
Average household size	1.83

Marital status

Status	Male	Female
Never married	62.4%	49.6%
Married	18.9%	18.6%
Separated	1.6%	4.4%
Widowed	3.3%	7.1%
Divorced	13.7%	20.3%

Education

Less than 9th grade 5.0%

Some HS, no diploma 8.9%

HS graduate 32.0%

Some college, no degree 22.4%

Associate's degree 8.5%

Bachelor's degree 14.5%

Graduate / professional 8.7%

Metric	%
HS diploma or higher	86.1%
Bachelor's or higher	23.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	69	1.7%
Kindergarten	135	3.4%
Elementary school	1,090	27.2%
High school	797	19.9%
College / grad school	1,912	47.8%

Employment

Industry of employment

Education & healthcare 23.9%

Professional & management 14.4%

Retail trade 12.2%

Arts, food & hospitality 9.7%

Manufacturing 9.5%

Finance & real estate 8.2%

Construction 6.1%

Transportation & utilities 5.8%

Wholesale trade 3.4%

Other services 3.3%

Public administration 2.1%

Information 1.4%

Occupation

Category	%
Management, business & arts	36.9%
Service	21.5%
Sales & office	20.9%
Natural resources & construction	6.6%
Production & transportation	14.0%

Employment type

Type	%
Private sector	87.1%
Government	9.2%
Self-employed	3.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	58.8%
Carpool	7.7%
Public transit	10.8%
Walk	5.0%
Work from home	13.2%
Other means	4.5%
Avg commute (minutes)	21.6

Poverty

All people 35.4%

Under 18 years 54.2%

18 and over 31.6%

Married-couple families 10.6%

Female-led households 40.3%

Income support

Source	% of households
Social Security	23.0%
Retirement income	14.3%
Supplemental Security	14.4%
Cash public assistance	5.1%
Food stamps / SNAP	29.5%

Health indicators

Condition	%
Obesity	47.3%
High blood pressure	50.2%
High cholesterol	34.3%
Diabetes	18.7%
Heart disease	9.2%
Stroke	6.1%
Asthma	14.4%
Arthritis	32.1%
Kidney disease	4.7%
Pulmonary disease	13.3%
Cancer	5.4%

Behavior / access	%
Smoking	28.8%
Binge drinking	12.8%
No physical activity	41.4%
Less than 7 hrs sleep	43.4%
Depression	25.9%
Fair or poor health	32.7%
Poor mental health	21.6%
Poor physical health	19.6%
No health insurance	16.1%
Visited doctor (checkup)	79.7%
Visited dentist	42.3%
Cholesterol screening	87.1%
Teeth loss	30.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,071	7.1%

Disability	%
Any disability	29.6%
Under 18	9.6%
18–64 years	29.1%
65 and over	61.8%

Health insurance coverage

Type	%
Private insurance	45.0%
Public insurance	58.3%
No insurance	7.4%
Uninsured under 19	1.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	16,983	94.5%
Spanish	424	2.5%
Other Indo-European	143	0.8%
Asian & Pacific Islander	24	0.1%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	17,343	96.5%
Born in same state	17,224	95.9%
Born in different state	12,302	68.5%
Foreign born	119	0.7%
Naturalized citizen	621	3.5%
Not a US citizen	221	35.6%

Ancestry

Ancestry	Count	%
French	1,563	8.7%
Italian	983	5.5%
Arab	598	3.3%
English	50	0.3%

Ancestry	Count	%
Norwegian	38	0.2%
German	31	0.2%
Polish	18	0.1%
Irish	5	0%

Technology access

Metric	% of households
Computer access	51.0%
Internet access	87.0%

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

Frequently asked questions about ZIP code 40203

What city is ZIP code 40203 in?

ZIP code 40203 is primarily assigned to Louisville, Kentucky.

What county is ZIP code 40203 in?

ZIP code 40203 falls within Jefferson County, Kentucky.

Is ZIP code 40203 mostly rentals?

78% of occupied units in ZIP code 40203 are renter-occupied.

What is the poverty rate in ZIP code 40203?

35% of residents in ZIP code 40203 live below the poverty line, above the national average.

What are the health statistics for ZIP code 40203?

Health data for ZIP code 40203 shows elevated rates of obesity (47%) and diabetes (19%) and smoking (29%) compared to national benchmarks.

What is the median household income in ZIP code 40203?

The median household income in ZIP code 40203 is $30,739, below the national median of ~$75,000.

What timezone is ZIP code 40203 in?

ZIP code 40203 observes the EST timezone.