62551 ZIP Code — Niantic, IL

Macon County, Illinois

ZIP code 62551 is located in Niantic, Illinois, within Macon County. It covers approximately 26.19 square miles and serves a population of 924 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 217.

About ZIP code 62551

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 $105,500. Owner-occupancy is high at 82%, well above the national average.

Median household income is $65,750. The poverty rate of 7% is below the national average. 38% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is sales and office, with manufacturing as the leading industry. The average commute of 23 minutes is near the national average.

College attainment at 14% is below the national average, consistent with a trades and production-oriented local economy.

Notable community characteristics include a notable veteran presence at 12% of civilians, above the national average of 7%.

Overall, ZIP code 62551 reflects a community defined by a trades-oriented workforce, a strong veteran community, high homeownership, and a significant Social Security-dependent population.

924

population

26.19

sq mi land

Standard

ZIP type

Central (CT)

timezone

62551 ZIP code map

Cities in ZIP code 62551

Below are the cities the US Postal Service accepts for ZIP code 62551. Using any city not on this list may result in mail delivery delays.

City	Status
Niantic	Preferred

Nearby ZIP codes

62539 Illiopolis (4.3 mi) 62547 Mount Auburn (6.6 mi) 62543 Latham (7.1 mi) 62522 Decatur (7.4 mi) 62573 Warrensburg (8.8 mi) 62526 Decatur (9.6 mi) 62513 Blue Mound (9.8 mi) 62548 Mount Pulaski (10.1 mi) 62515 Buffalo (11.3 mi) 62535 Forsyth (11.9 mi) 62521 Decatur (11.9 mi) 62523 Decatur (12.1 mi)

Demographics updated 05/2026

Population
Total population	924
Population density	35 / sq mi
State FIPS	17
County FIPS	115

Geography
Land area	26.19 sq mi
Water area	0.06 sq mi
Latitude	39.8595
Longitude	-89.1798
Timezone	Central (CT)
Area code	217

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	36.7%	47.5%	37.2%
$50k – $100k	49.8%	31.7%	29.6%
$100k – $200k	8.6%	16.7%	24.4%
Over $200k	4.8%	4.2%	8.8%

Demographics & statistics

924

Population

People per sq mi

36.3

Median age

$65,750

Median household income

$30,365

Per capita income

$105,500

Median home value

$700

Median monthly rent

82.4%

Home ownership

6.7%

Poverty rate

9.3%

Unemployment

312

Housing units

13.8%

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	292	31.6%
18 and over	632	68.4%
65 and over	143	15.5%
Median age	36.3 years

Race & ethnicity

White 78.2%

Two or more races 14.2%

Hispanic or Latino 7.2%

Other race 0.3%

American Indian / Alaska Native 0.1%

Group	Count	%
White	779	78.2%
Two or more races	141	14.2%
Hispanic or Latino	72	7.2%
Other race	3	0.3%
American Indian / Alaska Native	1	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	36.7%	47.5%	37.2%
$50k – $100k	49.8%	31.7%	29.6%
$100k – $200k	8.6%	16.7%	24.4%
Over $200k	4.8%	4.2%	8.8%

Under $10k 3.8%

$10k–$15k 0.6%

$15k–$25k 4.1%

$25k–$35k 8.5%

$35k–$50k 12.3%

$50k–$75k 24.3%

$75k–$100k 26.4%

$100k–$150k 12.3%

$150k–$200k 2.9%

$200k+ 4.7%

Range	% of households
Under $10k	3.8%
$10k–$15k	0.6%
$15k–$25k	4.1%
$25k–$35k	8.5%
$35k–$50k	12.3%
$50k–$75k	24.3%
$75k–$100k	26.4%
$100k–$150k	12.3%
$150k–$200k	2.9%
$200k+	4.7%
Median income	$65,750

Housing

Home values

Under $50k 6.0%

$50k–$100k 37.7%

$100k–$150k 40.9%

$150k–$200k 6.4%

$200k–$300k 6.0%

$300k–$500k 2.8%

Housing overview

Metric	Value
Median home value	$105,500
Median rent / month	$700
Owner occupied	82.4%
Renter occupied	17.6%
Vacant	8.3%
Single-family detached	84.7%
Large apartment buildings	0.0%
Mobile homes	1.6%
Median rooms	5.8
Avg household size (owned)	2.74

Year built

Era	%
2020 or later	0.5%
2010–2019	0.0%
2000–2009	4.0%
1990–1999	10.5%
1980–1989	7.5%
1970–1979	16.1%
1960–1969	7.5%
1950–1959	9.9%
1940–1949	6.5%
1939 or earlier	37.4%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	5.9%
2 bedrooms	27.2%
3 bedrooms	44.9%
4 bedrooms	17.2%
5+ bedrooms	4.8%

Vehicles per household

Vehicles	% of households
No vehicle	3.2%
1 vehicle	31.4%
2 vehicles	46.3%
3 or more	19.1%

Heating fuel

Fuel type	%
Utility gas	61.3%
Electricity	21.7%
Propane / LP gas	17.0%

Households & families

Household type	Count	%
Married-couple family	155	45.5%
Cohabiting couple	35	10.3%
Male householder, no spouse	94	27.6%
Female householder, no spouse	57	16.7%
Households with children under 18	87	25.5%
Households with seniors (65+)	116	34.0%
Average household size	2.71

Marital status

Status	Male	Female
Never married	22.5%	26.0%
Married	49.4%	50.2%
Separated	4.4%	0.9%
Widowed	3.5%	7.5%
Divorced	20.2%	15.4%

Education

Less than 9th grade 3.6%

Some HS, no diploma 3.3%

HS graduate 42.7%

Some college, no degree 28.1%

Associate's degree 8.6%

Bachelor's degree 6.0%

Graduate / professional 7.7%

Metric	%
HS diploma or higher	93.1%
Bachelor's or higher	13.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	4	1.9%
Kindergarten	14	6.7%
Elementary school	111	53.1%
High school	29	13.9%
College / grad school	51	24.4%

Employment

Industry of employment

Manufacturing 24.5%

Education & healthcare 21.6%

Professional & management 12.3%

Retail trade 9.1%

Transportation & utilities 8.9%

Finance & real estate 5.9%

Wholesale trade 4.5%

Public administration 4.1%

Arts, food & hospitality 3.0%

Construction 2.7%

Other services 2.3%

Agriculture & mining 0.7%

Information 0.5%

Occupation

Category	%
Management, business & arts	28.0%
Service	11.4%
Sales & office	28.4%
Natural resources & construction	16.4%
Production & transportation	15.9%

Employment type

Type	%
Private sector	85.9%
Government	11.4%
Self-employed	2.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	85.5%
Carpool	11.8%
Public transit	0.0%
Walk	0.0%
Work from home	2.3%
Other means	0.5%
Avg commute (minutes)	22.8

Poverty

All people 6.7%

Under 18 years 4.4%

18 and over 7.6%

Married-couple families 2.6%

Female-led households 33.3%

Income support

Source	% of households
Social Security	38.4%
Retirement income	15.5%
Supplemental Security	4.4%
Cash public assistance	2.1%
Food stamps / SNAP	10.3%

Health indicators

Condition	%
Obesity	33.1%
High blood pressure	30.5%
High cholesterol	31.3%
Diabetes	8.4%
Heart disease	5.8%
Stroke	2.6%
Asthma	9.4%
Arthritis	24.9%
Kidney disease	2.5%
Pulmonary disease	6.2%
Cancer	6.8%

Behavior / access	%
Smoking	17.6%
Binge drinking	16.3%
No physical activity	22.3%
Less than 7 hrs sleep	30.1%
Depression	17.8%
Fair or poor health	12.0%
Poor mental health	12.6%
Poor physical health	8.9%
No health insurance	9.6%
Visited doctor (checkup)	76.4%
Visited dentist	67.5%
Cholesterol screening	90.0%
Teeth loss	12.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	73	11.6%

Disability	%
Any disability	10.3%
Under 18	6.8%
18–64 years	7.6%
65 and over	26.6%

Health insurance coverage

Type	%
Private insurance	84.1%
Public insurance	30.4%
No insurance	1.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	789	85.4%
Spanish	15	1.9%
Other Indo-European	15	1.9%
Asian & Pacific Islander	0	0.0%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	900	97.4%
Born in same state	896	97.0%
Born in different state	756	81.8%
Foreign born	4	0.4%
Naturalized citizen	24	2.6%
Not a US citizen	10	41.7%

Ancestry

Ancestry	Count	%
French	157	17%
Arab	79	8.5%
Italian	70	7.6%

Ancestry	Count	%
English	7	0.8%
Dutch	7	0.8%
Polish	2	0.2%

Technology access

Metric	% of households
Computer access	36.9%
Internet access	96.8%

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

Frequently asked questions about ZIP code 62551

What city is ZIP code 62551 in?

ZIP code 62551 is primarily assigned to Niantic, Illinois.

What county is ZIP code 62551 in?

ZIP code 62551 falls within Macon County, Illinois.

Is ZIP code 62551 family-oriented?

32% of residents in ZIP code 62551 are under 18, reflecting a younger, family-oriented community.

How educated is the population of ZIP code 62551?

14% of residents hold a bachelor's degree or higher — below the national average of ~33%, consistent with a trades-oriented local economy.

Is ZIP code 62551 mostly owner-occupied?

82% of occupied units in ZIP code 62551 are owner-occupied, well above the national average.

Does ZIP code 62551 have a large retiree population?

38% of households in ZIP code 62551 receive Social Security income, suggesting a significant retiree or disability population.

What timezone is ZIP code 62551 in?

ZIP code 62551 observes the CST timezone.