61734 ZIP Code — Delavan, IL

Tazewell County, Illinois

ZIP code 61734 is located in Delavan, Illinois, within Tazewell County. It covers approximately 76.50 square miles and serves a population of 2,520 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 309.

About ZIP code 61734

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $139,300. Owner-occupancy is high at 83%, well above the national average.

Median household income is $71,000. 45% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 29 minutes is near the national average.

College attainment at 20% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 13% of civilians, above the national average of 7%.

Overall, ZIP code 61734 reflects a community defined by a trades-oriented workforce, a strong veteran community, high homeownership, and a significant Social Security-dependent population.

2,520

population

76.50

sq mi land

Standard

ZIP type

Central (CT)

timezone

61734 ZIP code map

Cities in ZIP code 61734

Below are the cities the US Postal Service accepts for ZIP code 61734. Using any city not on this list may result in mail delivery delays.

City	Status
Delavan	Acceptable
Delavan	Preferred

Nearby ZIP codes

61747 Hopedale (4.6 mi) 61568 Tremont (7.6 mi) 62635 Emden (8 mi) 61534 Green Valley (8.4 mi) 61721 Armington (9.1 mi) 62643 Hartsburg (9.6 mi) 61759 Minier (9.6 mi) 62682 San Jose (12.4 mi) 61755 Mackinaw (12.6 mi) 61554 Pekin (12.8 mi) 61535 Groveland (13.4 mi) 61558 Pekin (14.7 mi)

Demographics updated 05/2026

Population
Total population	2,520
Population density	33 / sq mi
State FIPS	17
County FIPS	179

Geography
Land area	76.50 sq mi
Water area	0.02 sq mi
Latitude	40.3870
Longitude	-89.4918
Timezone	Central (CT)
Area code	309

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	36.4%	37.5%	37.2%
$50k – $100k	41.6%	33.6%	29.6%
$100k – $200k	19.1%	24.0%	24.4%
Over $200k	2.9%	4.9%	8.8%

Demographics & statistics

2,520

Population

People per sq mi

46.6

Median age

$71,000

Median household income

$33,840

Per capita income

$139,300

Median home value

$900

Median monthly rent

83.0%

Home ownership

9.4%

Poverty rate

5.5%

Unemployment

980

Housing units

19.7%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

112

10–14

122

15–19

20–24

125

25–34

135

129

35–44

139

128

45–54

138

55–59

103

60–64

111

185

65–74

199

75–84

103

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	577	22.9%
18 and over	1,943	77.1%
65 and over	649	25.8%
Median age	46.6 years

Race & ethnicity

White 96%

Two or more races 1.9%

Hispanic or Latino 0.6%

Other race 0.6%

Asian 0.4%

Black or African American 0.3%

American Indian / Alaska Native 0.1%

Group	Count	%
White	2,434	96%
Two or more races	49	1.9%
Hispanic or Latino	16	0.6%
Other race	16	0.6%
Asian	11	0.4%
Black or African American	8	0.3%
American Indian / Alaska Native	2	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	36.4%	37.5%	37.2%
$50k – $100k	41.6%	33.6%	29.6%
$100k – $200k	19.1%	24.0%	24.4%
Over $200k	2.9%	4.9%	8.8%

Under $10k 4.3%

$10k–$15k 2.2%

$15k–$25k 5.9%

$25k–$35k 5.2%

$35k–$50k 12.7%

$50k–$75k 21.9%

$75k–$100k 21.0%

$100k–$150k 19.8%

$150k–$200k 3.8%

$200k+ 3.4%

Range	% of households
Under $10k	4.3%
$10k–$15k	2.2%
$15k–$25k	5.9%
$25k–$35k	5.2%
$35k–$50k	12.7%
$50k–$75k	21.9%
$75k–$100k	21.0%
$100k–$150k	19.8%
$150k–$200k	3.8%
$200k+	3.4%
Median income	$71,000

Housing

Home values

Under $50k 2.6%

$50k–$100k 22.4%

$100k–$150k 34.9%

$150k–$200k 13.0%

$200k–$300k 20.7%

$300k–$500k 6.5%

Housing overview

Metric	Value
Median home value	$139,300
Median rent / month	$900
Owner occupied	83.0%
Renter occupied	17.0%
Vacant	12.9%
Single-family detached	91.0%
Large apartment buildings	0.3%
Mobile homes	0.4%
Median rooms	6.1
Avg household size (owned)	2.57

Year built

Era	%
2020 or later	0.0%
2010–2019	0.9%
2000–2009	4.3%
1990–1999	4.0%
1980–1989	1.9%
1970–1979	24.2%
1960–1969	10.3%
1950–1959	12.8%
1940–1949	4.7%
1939 or earlier	37.0%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	3.8%
2 bedrooms	21.3%
3 bedrooms	52.3%
4 bedrooms	16.2%
5+ bedrooms	6.3%

Vehicles per household

Vehicles	% of households
No vehicle	2.4%
1 vehicle	25.7%
2 vehicles	44.9%
3 or more	26.9%

Heating fuel

Fuel type	%
Utility gas	64.2%
Electricity	19.3%
Propane / LP gas	13.5%
Fuel oil	0.2%
Wood	0.8%
Solar	0.5%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	574	57.3%
Cohabiting couple	57	5.7%
Male householder, no spouse	107	10.7%
Female householder, no spouse	264	26.3%
Households with children under 18	266	26.5%
Households with seniors (65+)	420	41.9%
Average household size	2.51

Marital status

Status	Male	Female
Never married	20.5%	16.8%
Married	67.9%	51.6%
Separated	1.5%	2.4%
Widowed	3.3%	10.0%
Divorced	6.8%	19.3%

Education

Less than 9th grade 3.0%

Some HS, no diploma 4.5%

HS graduate 36.4%

Some college, no degree 25.2%

Associate's degree 11.2%

Bachelor's degree 16.2%

Graduate / professional 3.5%

Metric	%
HS diploma or higher	92.5%
Bachelor's or higher	19.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	49	8.0%
Kindergarten	33	5.4%
Elementary school	349	56.8%
High school	118	19.2%
College / grad school	65	10.6%

Employment

Industry of employment

Education & healthcare 26.9%

Manufacturing 14.8%

Retail trade 10.8%

Arts, food & hospitality 10.5%

Construction 8.8%

Transportation & utilities 7.2%

Agriculture & mining 5.6%

Finance & real estate 4.1%

Other services 3.3%

Wholesale trade 2.7%

Professional & management 2.1%

Information 1.6%

Public administration 1.5%

Occupation

Category	%
Management, business & arts	34.8%
Service	18.7%
Sales & office	18.2%
Natural resources & construction	11.2%
Production & transportation	17.1%

Employment type

Type	%
Private sector	86.5%
Government	6.6%
Self-employed	6.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	89.7%
Carpool	2.5%
Public transit	0.0%
Walk	2.6%
Work from home	5.2%
Other means	0.0%
Avg commute (minutes)	29.3

Poverty

All people 9.4%

Under 18 years 12.1%

18 and over 8.5%

Married-couple families 2.6%

Female-led households 37.8%

Income support

Source	% of households
Social Security	44.9%
Retirement income	38.8%
Supplemental Security	3.8%
Cash public assistance	2.4%
Food stamps / SNAP	9.1%

Health indicators

Condition	%
Obesity	33.1%
High blood pressure	33.1%
High cholesterol	33.5%
Diabetes	9.8%
Heart disease	6.8%
Stroke	3.1%
Asthma	9.5%
Arthritis	27.1%
Kidney disease	2.9%
Pulmonary disease	7.3%
Cancer	7.6%

Behavior / access	%
Smoking	17.8%
Binge drinking	15.1%
No physical activity	24.3%
Less than 7 hrs sleep	31.0%
Depression	17.4%
Fair or poor health	13.3%
Poor mental health	12.4%
Poor physical health	9.8%
No health insurance	9.6%
Visited doctor (checkup)	77.5%
Visited dentist	65.6%
Cholesterol screening	90.5%
Teeth loss	13.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	249	12.9%

Disability	%
Any disability	18.7%
Under 18	3.1%
18–64 years	13.3%
65 and over	43.0%

Health insurance coverage

Type	%
Private insurance	71.1%
Public insurance	46.8%
No insurance	6.1%
Uninsured under 19	3.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,426	96.3%
Spanish	9	0.4%
Other Indo-European	9	0.4%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,504	99.4%
Born in same state	2,471	98.1%
Born in different state	2,077	82.4%
Foreign born	33	1.3%
Naturalized citizen	16	0.6%
Not a US citizen	11	68.8%

Ancestry

Ancestry	Count	%
French	350	13.9%
Italian	283	11.2%
Arab	78	3.1%

Ancestry	Count	%
English	47	1.9%
Polish	24	1%
Norwegian	7	0.3%

Technology access

Metric	% of households
Computer access	39.8%
Internet access	92.2%

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

Frequently asked questions about ZIP code 61734

What city is ZIP code 61734 in?

ZIP code 61734 is primarily assigned to Delavan, Illinois.

What county is ZIP code 61734 in?

ZIP code 61734 falls within Tazewell County, Illinois.

Does ZIP code 61734 have an older population?

26% of residents in ZIP code 61734 are 65 or older, above the national average of ~17%.

Does ZIP code 61734 have a large retiree population?

45% of households in ZIP code 61734 receive Social Security income, suggesting a significant retiree or disability population.

Is ZIP code 61734 mostly owner-occupied?

83% of occupied units in ZIP code 61734 are owner-occupied, well above the national average.

Does ZIP code 61734 have a large veteran population?

13% of civilians in ZIP code 61734 are veterans, above the national average of ~7%.

What timezone is ZIP code 61734 in?

ZIP code 61734 observes the CST timezone.