Data Last Updated: July 1, 2025

Linn County, IA ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Linn, IA.	35 ZIP Codes (22 General, 6 PO Box, 3 Unique, & 4 Multi County) [More Details]
Area Code: The Telephone Area Code that are associated with Linn, IA. Area Codes are used in the North American Numbering Plan (NANP) to facilitate phone routing. There are approximately 350 area codes in use in the United States.	319
Timezone: Time zone designation within the U.S. Please note that not all areas in the U.S. observe daylight saving time which can affect actual local time for this city. There are 7 standard time zones which are, from west to east: Hawaii-Aleutian, Alaska, Pacific, Mountain, Central, Eastern, Atlantic. Also included in U.S. Territories are Samoa, Guam and Palau.	Central
Local Time: The current local time for each timezone. If more than 1 time zone for this area, all local times will be shown. Counties can cross timezones, so more than 1 may be shown.	12:00:00 AM
Population: The population of Linn, IA from the U.S. Census 2020. Included are U.S. Citizens, permanent residents, temporary migrants, and undocumented individuals. The total population represents people who live in the city, not just those present while the Census was being completed.	230,299 [More Details]
FIPS: FIPS stands for Federal Information Processing Standards, which are a set of publicly announced standards for computer systems. A county FIPS code is a unique numeric identifier for a county in the United States, assigned by the National Institute of Standards and Technology (NIST). County FIPS codes have five digits, with the first two digits identifying the state and the last 3 indicating the county.	19113
CBSA: A Core Based Statistical Area (CBSA) is the recognized term for a region that functions around an urban core with a population of at least 10,000 people, according to the standards set by the Office of Management and Budget (OMB) in 2000. A CBSA is divided into two subsets: Metro and Micro, and these classifications are determined by population density. A Micro area is identified by a population ranging between 10,000 to 50,000, while a Metro area is defined as having a population that exceeds 50,000.	Cedar Rapids, IA
Land Area: The approximate amount of land area covered by Linn, IA in square miles. The Land Area provided by the Census Bureau is based on geographic boundaries that include the mainland, islands, inland, coastal, Great Lakes, and territorial waters associated with each city.	717 square miles
Water Area: The approximate amount of water area covered by Linn, IA in square miles. Calculations by the Census Bureau for Water Area take into account inland bodies of water, coastal regions, Great Lakes, and territorial sea waters. This encompasses features such as lakes, reservoirs, rivers, and coastal water bodies.	8 square miles
Coordinates: The latitude/longitude centroid coordinates for Linn County, IA.	-91.599027, 42.078960
Quick Link: Copy the direct link to the Linn, IACounty page and use anywhere you like!	https://www.zip-codes.com/county/ia-linn.asp

Linn, IA ZIP Code Boundaries

Download ZIP Code Database

Load Linn County, IA Map

Linn County, IA Covers 35 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 52202	General	Alburnett	1,112	0.48%
ZIP Code 52213	General	Center Point	4,408	1.91%
ZIP Code 52214	General	Central City	3,001	1.30%
ZIP Code 52218	General	Coggon	1,726	0.75%
ZIP Code 52219	General	Prairieburg	160	0.07%
ZIP Code 52227	General	Ely	3,089	1.34%
ZIP Code 52228	General	Fairfax	3,402	1.48%
ZIP Code 52233	General	Hiawatha	7,091	3.08%
ZIP Code 52253	General	Lisbon	3,356	1.46%
ZIP Code 52302	General	Marion	43,130	18.73%
ZIP Code 52305 *	General	Martelle	663	--
ZIP Code 52314	General	Mount Vernon	5,937	2.58%
ZIP Code 52323 *	General	Oxford Junction	738	--
ZIP Code 52324	General	Palo	2,476	1.08%
ZIP Code 52328	General	Robins	2,889	1.25%
ZIP Code 52333 *	General	Solon	7,312	--
ZIP Code 52336	General	Springville	2,310	1.00%
ZIP Code 52338 *	General	Swisher	3,457	--
ZIP Code 52341	General	Toddville	1,045	0.45%
ZIP Code 52344	P.O. Box	Troy Mills	22	0.01%
ZIP Code 52352	General	Walker	1,815	0.79%
ZIP Code 52401	General	Cedar Rapids	2,320	1.01%
ZIP Code 52402	General	Cedar Rapids	42,072	18.27%
ZIP Code 52403	General	Cedar Rapids	23,012	9.99%
ZIP Code 52404	General	Cedar Rapids	43,385	18.84%
ZIP Code 52405	General	Cedar Rapids	26,382	11.46%
ZIP Code 52406	P.O. Box	Cedar Rapids	0	0.00%
ZIP Code 52407	P.O. Box	Cedar Rapids	0	0.00%
ZIP Code 52408	P.O. Box	Cedar Rapids	0	0.00%
ZIP Code 52409	P.O. Box	Cedar Rapids	0	0.00%
ZIP Code 52410	P.O. Box	Cedar Rapids	0	0.00%
ZIP Code 52411	General	Cedar Rapids	7,954	3.45%
ZIP Code 52498	Unique	Cedar Rapids	0	0.00%
ZIP Code 52499	Unique	Cedar Rapids	0	0.00%

* Indicates a Multi County ZIP Code. These ZIP Codes partially cross over into Linn, IA, but will mostly cover area in a different County. Not included in % of Population calculations.

Important Linn, IA Information

Linn County, IA Covers 35 ZIP Codes. This includes 22 General ZIP Codes, 6 PO Box ZIP Codes, and 3 Unique (reserved for Business and Volume Mail Receivers). There are also 4 Multi County ZIP Codes. These records are assigned a different primary county, but they partially cover area in Linn County.

The population for Linn County is 230,299, according to the U.S. Census. Population Density is 321.20 persons per square mile. With 101,230 Housing Units, the Average Household Size is 2.37 persons. There are 94,751 Family Households with an Average Family Size of 2.96 persons. 3.39% of the population is without Health Insurance. The 65.50% Employment Rate is 5.70% above the national average of 59.8%.156,613 people aged 25+ have some educational achievement, with 34.83% (or 54,553 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

319 is the only area code for this area. Linn is also located in the Central timezone and the current local time is shown above.

Linn is part of the Cedar Rapids, IA Core Based Statistical Area (CBSA). Its CBSA Code is 16300.It is classified as a metro area, which means the combined population is 50,000 or more (at its core).

CBSAs are defined by the OMB as geographic areas that have at least one core with a population of 10,000 or more (for a micro area) and adjacent territory with a high degree of social and economic integration. CBSA codes are commonly used to accurately file Medicare claims and to verify applicable incentives using a patient's ZIP Code.

ZIP Codes in Linn, IA have 100,726 Residential mailboxes and 5,680 Business mailboxes.There are 5,823 businesses with a total of 117,513 employees. That is an average of 20.2 employees per business. Annual payroll for these businesses is $6,959,287,000. Other Demographics

Linn County Demographic Profile

Population & People

Total Population

230,299

Income

Median Household Income

$76,421

Housing

Total Housing Units

101,230

Health

Without Healthcare Coverage

3.39%

Business & Economy

Total Businesses

5,823

Families

Total Households

94,751

Employment

Employment Rate

65.50%

Education

Bachelor's Degree or Higher

34.83%

Total Population: Total number of people from the 2020 U.S. Census for Linn, IA. This reflects the exact count of this area at that point in time, not future estimates, regardless of citizenship or immigration status. It is intended to count all persons living within the geographic area, not just those present on the day of the census.	230,299
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Linn, IA. This is derived from known delivery information, household occupancy rates, household size, and more to come up with an accurate estimation for the current population. IMPORTANT: This does not include population totals for persons in nursing homes, correctional facilities, or other institutions. This is an estimation of the household population based on US Postal Service delivery information.	238,691
Total Households: Total number of Households from the 2020 U.S. Census for Linn, IA. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	94,751
Total Housing Units: The total number of Housing Units is the number of occupied units + the number of vacant units. Ownership is defined by whether the unit is occupied by an owner or by a tenant. Owner occupancy means that the owner lives in the unit. This value comes from the 2020 U.S. Census and is not a projection or estimate.	101,230
Average Household Size: The Average Household Size, is obtained by dividing the number of people in Households (excluding those in group quarters, nursing home, prisons, and dorm rooms) by the number of Households. A Household includes everyone living in a residential unit. Those who do not live in a household are classified as living in group accommodation. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	2.37
Average Family Size: Average Family Size is calculated by dividing the number of people in a Family Household by the number of Family Households. The U.S. Census Bureau defines family households as households consisting of two or more individuals who are related by birth, marriage, or adoption. They also may include other unrelated people. Non-family households consist of people who live alone or who share their residence with unrelated individuals. The Average Family Size only looks at the households classified as Family Households. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	2.96

Other Linn Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	100,726
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	5,680
Total Delivery Receptacles: The total number of delivery receptacles. This includes curb side mailboxes, centralized units, PO Boxes, NDCBU, and contract boxes. This count is for Residential and Business combined.	120,049
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	66,361
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	17,850

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	5,823
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$1,703,285,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$6,959,287,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	117,513

Sum of all ZIP Codes assigned Linn, IA as their primary County.

References

U.S. Postal Service [Last Updated: 7/1/2025], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 7/1/2025], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov