Round Lake ZIP Codes — Nobles County, MN

There is one unique ZIP code in Round Lake, Minnesota and it is 56167. Area code: 507.

ZIP codes

52.33

sq mi land

2.45

sq mi water

507

area code

Round Lake, MN ZIP code map

About Round Lake, MN

Round Lake, Minnesota, is a small city located in Nobles County. Known for its tranquil setting and friendly community, it offers a peaceful lifestyle away from the hustle and bustle. The city's charm is highlighted by its scenic landscapes and the inviting atmosphere of local parks.

Location & geography

Round Lake is situated in the southwestern part of Minnesota, approximately 10 miles southeast of Worthington and about 25 miles from the Iowa border. The city encompasses a total area of 52.33 square miles, with 2.45 square miles designated as water, providing opportunities for outdoor recreation. The terrain features a mix of flatlands and gently rolling hills, typical of the prairie landscape in this region.

Community & economy

The community of Round Lake is characterized by a close-knit atmosphere, with residents often engaging in local events and activities. Agriculture plays a significant role in the local economy, with many families involved in farming and related industries. Daily life in Round Lake is marked by a strong sense of community spirit and involvement in various recreational and social events.

Transportation

Round Lake is conveniently accessible via U.S. Highway 59, which connects the city to nearby communities and larger urban areas. The nearest major airport is the Worthington Regional Airport, located approximately 10 miles to the northwest. Public transit options are limited, so most residents rely on personal vehicles for travel.

History

Round Lake was officially incorporated in the early 1900s and has since developed as a serene residential area. The city has historically centered around agricultural activities, contributing to the regional economy. Notable events in its history include the establishment of community gatherings and celebrations that have continued to foster a sense of belonging among residents.

Did you know?

One surprising fact about Round Lake is its name, which originates from the round shape of the lake that the community is built around. Additionally, the small city serves as a peaceful retreat, attracting visitors looking for a quiet getaway in southwestern Minnesota.

ZIP codes for Round Lake, MN (1)

ZIP code	City	County	Map
56167	Round Lake	Nobles	View map

Demographics & statistics

645

Population

48.2

Median age

$68,750

Median household income

$45,807

Per capita income

$115,800

Median home value

$582

Median monthly rent

83.8%

Home ownership

5.2%

Poverty rate

2.4%

Unemployment

278

Housing units

15.7%

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	105	16.3%
18 and over	540	83.7%
65 and over	157	24.3%
Median age	48.2 years

Race & ethnicity

White 88.8%

Two or more races 3.9%

Hispanic or Latino 3.4%

Black or African American 1.6%

Other race 1.6%

American Indian / Alaska Native 0.4%

Asian 0.1%

Group	Count	%
White	593	88.8%
Two or more races	26	3.9%
Hispanic or Latino	23	3.4%
Black or African American	11	1.6%
Other race	11	1.6%
American Indian / Alaska Native	3	0.4%
Asian	1	0.1%

Household income

Under $10k 2.9%

$10k–$15k 3.6%

$15k–$25k 5.4%

$25k–$35k 9.7%

$35k–$50k 8.7%

$50k–$75k 23.8%

$75k–$100k 20.2%

$100k–$150k 18.4%

$150k–$200k 3.2%

$200k+ 4.0%

Range	% of households
Under $10k	2.9%
$10k–$15k	3.6%
$15k–$25k	5.4%
$25k–$35k	9.7%
$35k–$50k	8.7%
$50k–$75k	23.8%
$75k–$100k	20.2%
$100k–$150k	18.4%
$150k–$200k	3.2%
$200k+	4.0%
Median income	$68,750

Housing

Home values

Under $50k 8.2%

$50k–$100k 33.6%

$100k–$150k 21.1%

$150k–$200k 14.2%

$200k–$300k 11.6%

$300k–$500k 7.8%

$500k–$1M 1.7%

$1M+ 1.7%

Housing overview

Metric	Value
Median home value	$115,800
Median rent / month	$582
Owner occupied	83.8%
Renter occupied	16.2%
Vacant	14.2%
Single-family detached	86.7%
Large apartment buildings	0.0%
Mobile homes	1.5%
Median rooms	6.1
Avg household size (owned)	2.39

Year built

Era	%
2020 or later	0.0%
2010–2019	0.9%
2000–2009	2.2%
1990–1999	5.0%
1980–1989	14.9%
1970–1979	13.0%
1960–1969	8.7%
1950–1959	8.4%
1940–1949	9.3%
1939 or earlier	37.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	11.8%
2 bedrooms	20.4%
3 bedrooms	52.3%
4 bedrooms	13.9%
5+ bedrooms	1.5%

Vehicles per household

Vehicles	% of households
No vehicle	2.9%
1 vehicle	19.5%
2 vehicles	45.5%
3 or more	32.1%

Heating fuel

Fuel type	%
Utility gas	62.1%
Electricity	7.6%
Propane / LP gas	24.5%
Fuel oil	4.3%
Wood	1.4%

Households & families

Household type	Count	%
Married-couple family	154	55.6%
Cohabiting couple	14	5.1%
Male householder, no spouse	66	23.8%
Female householder, no spouse	43	15.5%
Households with children under 18	46	16.6%
Households with seniors (65+)	100	36.1%
Average household size	2.33

Marital status

Status	Male	Female
Never married	26.7%	23.8%
Married	58.0%	64.6%
Separated	2.0%	1.9%
Widowed	2.0%	4.2%
Divorced	11.3%	5.4%

Education

Less than 9th grade 2.5%

Some HS, no diploma 2.7%

HS graduate 42.4%

Some college, no degree 17.4%

Associate's degree 19.4%

Bachelor's degree 14.3%

Graduate / professional 1.4%

Metric	%
HS diploma or higher	94.8%
Bachelor's or higher	15.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	9	8.7%
Kindergarten	7	6.7%
Elementary school	28	26.9%
High school	19	18.3%
College / grad school	41	39.4%

Employment

Industry of employment

Manufacturing 19.3%

Education & healthcare 16.0%

Agriculture & mining 12.0%

Construction 9.0%

Wholesale trade 8.8%

Other services 8.5%

Retail trade 8.0%

Professional & management 7.0%

Transportation & utilities 6.8%

Public administration 2.5%

Arts, food & hospitality 2.0%

Finance & real estate 0.3%

Occupation

Category	%
Management, business & arts	30.8%
Service	15.8%
Sales & office	12.0%
Natural resources & construction	17.0%
Production & transportation	24.5%

Employment type

Type	%
Private sector	73.8%
Government	8.5%
Self-employed	16.3%
Unpaid family workers	1.5%

Commute

Method	%
Drive alone	71.9%
Carpool	11.8%
Public transit	0.0%
Walk	4.5%
Other means	0.3%
Avg commute (minutes)	28.2

Poverty

All people 5.2%

Under 18 years 4.0%

18 and over 5.4%

Married-couple families 1.3%

Female-led households 25.0%

Income support

Source	% of households
Social Security	35.0%
Retirement income	23.1%
Supplemental Security	1.4%
Cash public assistance	5.4%
Food stamps / SNAP	5.1%

Health indicators

Condition	%
High blood pressure	32.4%
High cholesterol	33.2%
Heart disease	7.6%
Stroke	3.5%
Asthma	9.0%
Arthritis	26.8%
Kidney disease	3.2%
Pulmonary disease	6.7%
Cancer	8.0%

Behavior / access	%
Binge drinking	18.5%
No physical activity	23.6%
Less than 7 hrs sleep	29.5%
Fair or poor health	13.6%
Poor mental health	13.2%
Poor physical health	10.6%
No health insurance	11.5%
Visited doctor (checkup)	71.9%
Visited dentist	65.8%
Cholesterol screening	90.5%
Teeth loss	12.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	38	7.0%

Disability	%
Any disability	14.0%
Under 18	1.9%
18–64 years	10.7%
65 and over	29.9%

Health insurance coverage

Type	%
Private insurance	75.8%
Public insurance	40.9%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	604	93.6%
Spanish	12	2.0%
Other Indo-European	6	1.0%
Asian & Pacific Islander	1	0.2%
Other languages	1	0.2%

Place of birth & citizenship

Origin	Count	%
Native born (US)	614	95.2%
Born in same state	613	95.0%
Born in different state	436	67.6%
Foreign born	1	0.2%
Naturalized citizen	31	4.8%
Not a US citizen	24	77.4%

Ancestry

Ancestry	Count	%
English	53	8.2%
Italian	47	7.3%
Polish	46	7.1%

Ancestry	Count	%
French	44	6.8%
Arab	20	3.1%
Dutch	5	0.8%

Technology access

Metric	% of households
Computer access	42.9%
Internet access	89.9%

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

Frequently asked questions

What ZIP codes does Round Lake, MN have?

Round Lake, MN has one ZIP code: 56167. Each ZIP code serves a distinct delivery area within the city and surrounding region.