Zip Code 60543
Oswego, Illinois — Kendall County
📍 ZIP code 60543 is in Oswego, Kendall County, Illinois.
ZIP code 60543 is located in Oswego, Kendall County, Illinois. It is a zip code in the Central (CST/CDT) Time Zone with an estimated population of 41,723. The area code for ZIP code 60543 is 309.
Quick Answer
Zip code 60543 is in Oswego, Illinois (Kendall County). It has a population of 41,723, median household income of $116,507, and median home value of $319,300.
Population
41,723
Income
$116,507
Home Value
$319,300
Climate
84°F / 16°F
About Zip Code 60543
Zip code 60543 is located in Oswego, Illinois, within Kendall County. Home to approximately 41,723 residents, this area sits at an elevation of 670 ft and falls within the Central (CST/CDT) timezone. The local area code is 309.
The median household income is $116,507 per year, which is above the national median of $70,784. Homes in this zip code have a median value of $319,300, and the cost of living index is 123 (23% above the national average of 100).
Summers average a high of 84°F while winters drop to 16°F. The area receives about 39 in of rain and 28 in of snow annually. The zip code covers 42.6 square miles of land area and 0.4 square miles of water.
Key Statistics
41,723
$116,507
$319,300
Central (CST/CDT)
309
670 ft
42.6 sq mi
39.2
14,327
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Compare With Nearby Zip Codes
| Metric | 60543 | 60538 | 60512 | 60544 | 60505 | 60504 |
|---|---|---|---|---|---|---|
| City | Oswego, IL | Montgomery, IL | Bristol, IL | Plainfield, IL | Aurora, IL | Aurora, IL |
| Population | 41,723 | 30,395 | 1,061 | 27,937 | 58,176 | 38,861 |
| Median Income | $116,507 | $92,064 | $102,750 | $108,447 | $70,306 | $98,249 |
| Home Value | $319,300 | $253,900 | $280,600 | $311,700 | $192,500 | $272,800 |
| Cost of Living | 123 | 101 | 112 | 117 | 72 | 105 |
| Median Age | 39.2 | 35.6 | 48 | 39 | 31.6 | 34.1 |
Cost of Living
100 = National Average. Oswego's cost of living is 23% above the national average.
vs. State Avg
Above
Affordability
Expensive
Income-to-Home
2.7x
Demographics
Zip code 60543 has a population of 41,723 people with a median age of 39.2. There are 14,327 housing units in this area.
Racial & Ethnic Composition
Source: U.S. Census Bureau American Community Survey estimates.
Population History
Oswego (60543) population trend from 2010 to 2024
↓ -8.0%Source: U.S. Census Bureau estimates and American Community Survey data.
Climate & Weather
84°F
16°F
39 in
28 in
Oswego experiences warm summers with average highs around 84°F. Winters are cold with lows averaging 16°F. The area receives about 28 in of snow per year.
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Housing & Economy
Median Home Value
$319,300
Median Household Income
$116,507
With 14,327 housing units across 42.6 square miles, 60543 has a housing density of 336 units per square mile. The home price-to-income ratio is 2.7x.
Location & Geography
Latitude
41.6683°
Longitude
-88.3228°
Land Area
42.6 sq mi
Water Area
0.4 sq mi
Nearby Zip Codes
Zip codes closest to 60543 (Oswego, IL) with distances:
ZIP Codes with Similar Income Nationwide
The five U.S. ZIP codes whose median household income is closest to 60543's $116,507. A way to compare Oswego to economically similar communities elsewhere in the country.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
ZIP Codes with Similar Demographics
The five U.S. ZIP codes whose racial and ethnic composition most closely matches 60543 (Oswego, IL). Similarity is measured by cosine distance on the five-category ACS demographic vector.
Computed from U.S. Census Bureau ACS 5-Year Estimates by the Zip Code Near Me Data Team.
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People Also Ask
What zip code is Oswego, Illinois?
Oswego, Illinois uses zip code 60543.
What county is zip code 60543 in?
Zip code 60543 is located in Kendall County, Illinois.
What is the population of zip code 60543?
The population of zip code 60543 is 41,723 with a median age of 39.2.
Is 60543 in Oswego, Illinois?
Yes, zip code 60543 is in Oswego, Kendall County, Illinois. The area code is 309.
Frequently Asked Questions
What city is zip code 60543 in?
Zip code 60543 is in Oswego, Illinois. It is part of Kendall County and uses the Central (CST/CDT) timezone.
What is zip code 60543?
Zip code 60543 is a U.S. postal code in Oswego, Illinois (Kendall County). It has a population of 41,723 and covers 42.6 square miles.
What is the population of zip code 60543?
The population of zip code 60543 (Oswego, IL) is 41,723 with a median age of 39.2. There are approximately 14,327 housing units in this area.
What is the median income in zip code 60543?
The median household income in zip code 60543 (Oswego, IL) is $116,507 per year. The cost of living index is 123 (100 = national average).
What is the average home price in zip code 60543?
The median home value in zip code 60543 (Oswego, IL) is $319,300. The cost of living index is 123 compared to the national average of 100.
What county is zip code 60543 in?
Zip code 60543 is located in Kendall County, Illinois. The primary city is Oswego.
What is the area code for zip code 60543?
Zip code 60543 in Oswego, IL uses area code 309. It is located in the Central (CST/CDT) timezone.
Is zip code 60543 a good place to live?
Zip code 60543 (Oswego, IL) has a cost of living index of 123 (100 = national average), a median household income of $116,507, and median home values of $319,300. The median age is 39.2. Visit the full page for demographics, climate, and nearby zip code comparisons.
What is the cost of living in zip code 60543?
The cost of living index for zip code 60543 (Oswego, IL) is 123, where 100 represents the national average. This area is above the national average. Median home value: $319,300.
What schools serve zip code 60543?
Zip code 60543 in Oswego, Illinois is served by the local school district of Kendall County. For specific school information, check your state's department of education or GreatSchools.org.
All demographic data on this page is sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code boundary and delivery data is sourced from the United States Postal Service (USPS). Data is updated periodically and may not reflect the most current figures. Census Bureau ZIP Code Tabulation Areas (ZCTAs) may differ slightly from USPS ZIP code boundaries.
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Data Sources
- Population, income, housing, age, and demographics
- U.S. Census Bureau, American Community Survey 5-Year Estimates, 2019-2023 vintage.
- ZIP to city and county mapping
- USPS and HUD-USPS ZIP-County Crosswalk.
- Time zones and area codes
- IANA tz database and NANPA.
- Elevation
- U.S. Geological Survey National Elevation Dataset (NED), via the USGS Elevation Point Query Service. Mapped to each ZCTA centroid coordinates. Last refreshed 2026-05-19.
- Last refreshed
- 2026-05-18.