De Kalb ZIP Code List — Buchanan County, MO

There is one unique ZIP code in De Kalb, Missouri and it is 64440. Area code: 816.

ZIP codes

36.24

sq mi land

0.04

sq mi water

816

area code

De Kalb, MO ZIP code map

About De Kalb, MO

De Kalb, Missouri, is a small and charming city located in Buchanan County. This community offers a unique blend of rural tranquility and easy access to nearby urban amenities. Known for its friendly atmosphere, De Kalb serves as a peaceful retreat for residents while also reflecting the rich heritage of the region.

Location & geography

De Kalb is strategically positioned in northwestern Missouri, approximately 10 miles from the larger city of St. Joseph and around 60 miles from Kansas City. The city encompasses a land area of 36.24 square miles, complemented by a minimal water area of 0.04 square miles. The terrain primarily consists of flat, open spaces that are characteristic of the region's landscape, making it ideal for agriculture and outdoor activities.

Community & economy

The character of De Kalb is defined by its tight-knit community and rustic charm. Residents enjoy a rural lifestyle with a focus on local businesses and agriculture, providing a strong sense of identity and purpose. Daily life here often revolves around community gatherings, local events, and engagement with nature, as the surrounding landscape promotes outdoor recreational activities.

Transportation

Transportation in De Kalb is facilitated by several key highways, including U.S. Highway 36, which runs nearby and connects residents to larger cities. The nearest major airport is Kansas City International Airport, located approximately 60 miles to the southeast. While public transit options may be limited due to the city's size, the well-connected highway system supports ease of travel for residents and visitors alike.

History

De Kalb was founded in the mid-1800s and has a rich history rooted in agriculture and local commerce. Over the years, key industries in the area have included farming and small-scale manufacturing, contributing to the city's economy. While the city has remained relatively small, it has maintained its historical character through various community initiatives and local events that celebrate its heritage.

Did you know?

One surprising fact about De Kalb is that it only has one ZIP code, which is 64440, highlighting its quaint size. Additionally, the city's land area of 36.24 square miles provides ample space for agricultural pursuits and community events.

ZIP codes for De Kalb, MO (1)

ZIP code	City	County	Map
64440	De Kalb	Buchanan	View map

Demographics & statistics

904

Population

36.0

Median age

$77,969

Median household income

$31,107

Per capita income

$178,300

Median home value

$767

Median monthly rent

81.2%

Home ownership

11.8%

Poverty rate

0.0%

Unemployment

304

Housing units

17.4%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

10–14

15–19

20–24

25–34

35–44

45–54

55–59

60–64

65–74

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	278	30.8%
18 and over	626	69.2%
65 and over	153	16.9%
Median age	36.0 years

Race & ethnicity

White 99.2%

Two or more races 0.8%

Group	Count	%
White	897	99.2%
Two or more races	7	0.8%

Household income

Under $10k 7.3%

$10k–$15k 6.4%

$15k–$25k 2.9%

$25k–$35k 7.3%

$35k–$50k 13.7%

$50k–$75k 8.9%

$75k–$100k 16.9%

$100k–$150k 25.2%

$150k–$200k 6.7%

$200k+ 4.5%

Range	% of households
Under $10k	7.3%
$10k–$15k	6.4%
$15k–$25k	2.9%
$25k–$35k	7.3%
$35k–$50k	13.7%
$50k–$75k	8.9%
$75k–$100k	16.9%
$100k–$150k	25.2%
$150k–$200k	6.7%
$200k+	4.5%
Median income	$77,969

Housing

Home values

Under $50k 3.1%

$50k–$100k 11.0%

$100k–$150k 14.6%

$150k–$200k 26.4%

$200k–$300k 29.1%

$300k–$500k 9.1%

$500k–$1M 2.8%

$1M+ 3.9%

Housing overview

Metric	Value
Median home value	$178,300
Median rent / month	$767
Owner occupied	81.2%
Renter occupied	18.8%
Vacant	13.8%
Single-family detached	82.1%
Large apartment buildings	0.0%
Mobile homes	17.9%
Median rooms	6.3
Avg household size (owned)	2.93

Year built

Era	%
2020 or later	0.6%
2010–2019	3.6%
2000–2009	8.3%
1990–1999	16.0%
1980–1989	14.9%
1970–1979	13.8%
1960–1969	5.8%
1950–1959	1.1%
1940–1949	3.6%
1939 or earlier	32.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	0.8%
2 bedrooms	25.6%
3 bedrooms	63.4%
4 bedrooms	8.0%
5+ bedrooms	2.2%

Vehicles per household

Vehicles	% of households
No vehicle	0.0%
1 vehicle	16.3%
2 vehicles	46.0%
3 or more	37.7%

Heating fuel

Fuel type	%
Utility gas	1.0%
Electricity	52.4%
Propane / LP gas	34.5%
Fuel oil	1.3%
Wood	8.9%
No fuel used	1.0%

Households & families

Household type	Count	%
Married-couple family	180	57.5%
Cohabiting couple	56	17.9%
Male householder, no spouse	29	9.3%
Female householder, no spouse	48	15.3%
Households with children under 18	130	41.5%
Households with seniors (65+)	102	32.6%
Average household size	2.89

Marital status

Status	Male	Female
Never married	36.6%	25.5%
Married	50.3%	62.9%
Separated	2.4%	0.0%
Widowed	4.8%	2.4%
Divorced	5.9%	9.1%

Education

Less than 9th grade 5.2%

Some HS, no diploma 4.8%

HS graduate 46.6%

Some college, no degree 24.1%

Associate's degree 2.1%

Bachelor's degree 13.7%

Graduate / professional 3.6%

Metric	%
HS diploma or higher	90.0%
Bachelor's or higher	17.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	12	6.6%
Kindergarten	15	8.3%
Elementary school	67	37.0%
High school	84	46.4%
College / grad school	3	1.7%

Employment

Industry of employment

Manufacturing 21.7%

Construction 11.8%

Education & healthcare 10.3%

Retail trade 9.9%

Arts, food & hospitality 8.9%

Professional & management 6.7%

Public administration 6.7%

Wholesale trade 6.4%

Transportation & utilities 6.4%

Finance & real estate 4.9%

Agriculture & mining 2.7%

Other services 2.0%

Information 1.7%

Occupation

Category	%
Management, business & arts	28.1%
Service	14.5%
Sales & office	15.8%
Natural resources & construction	18.0%
Production & transportation	23.6%

Employment type

Type	%
Private sector	76.6%
Government	14.8%
Self-employed	8.6%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	80.3%
Carpool	9.4%
Public transit	0.0%
Walk	3.0%
Other means	3.0%
Avg commute (minutes)	29.5

Poverty

All people 11.8%

Under 18 years 9.0%

18 and over 13.1%

Married-couple families 2.8%

Female-led households 33.3%

Income support

Source	% of households
Social Security	32.6%
Retirement income	18.8%
Supplemental Security	0.6%
Cash public assistance	1.0%
Food stamps / SNAP	4.2%

Health indicators

Condition	%
High blood pressure	34.1%
High cholesterol	33.7%
Heart disease	8.1%
Stroke	3.7%
Asthma	9.9%
Arthritis	29.7%
Kidney disease	3.2%
Pulmonary disease	10.1%
Cancer	7.0%

Behavior / access	%
Binge drinking	16.4%
No physical activity	28.1%
Less than 7 hrs sleep	34.1%
Fair or poor health	18.9%
Poor mental health	17.3%
Poor physical health	13.3%
No health insurance	16.8%
Visited doctor (checkup)	74.1%
Visited dentist	55.6%
Cholesterol screening	87.6%
Teeth loss	21.3%

Veterans & disability

Veterans	Count	%
Civilian veterans	15	2.4%

Disability	%
Any disability	8.7%
Under 18	0.0%
18–64 years	7.0%
65 and over	30.1%

Health insurance coverage

Type	%
Private insurance	77.8%
Public insurance	31.1%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	800	88.5%
Spanish	0	0.0%
Other Indo-European	0	0.0%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	904	100.0%
Born in same state	904	100.0%
Born in different state	656	72.6%
Foreign born	0	0.0%
Naturalized citizen	0	0.0%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
Arab	216	23.9%
Italian	171	18.9%
French	59	6.5%

Ancestry	Count	%
English	8	0.9%
Polish	4	0.4%

Technology access

Metric	% of households
Computer access	34.6%
Internet access	94.6%

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

Frequently asked questions

What is the ZIP code for De Kalb, MO?

De Kalb, MO has one ZIP code: 64440.

What is the main ZIP code for De Kalb, MO?

The primary ZIP code for De Kalb, MO is 64440. The city uses area code 816 for phone service.

What county is De Kalb, MO in?

De Kalb is located in Buchanan County, Missouri.

How many ZIP codes are in De Kalb, MO?

De Kalb, MO has 1 ZIP code.

What is the ZIP code for downtown De Kalb, Missouri?

Downtown De Kalb, Missouri is located in ZIP code 64440, which serves as the primary commercial and civic center of this Buchanan County community.

What ZIP code should I use when mailing correspondence to businesses in De Kalb, Missouri?

All mailing addresses for De Kalb, Missouri businesses and residents should use ZIP code 64440, as it is the sole ZIP code serving the entire city.