Data Last Updated: April 1, 2025

Black Hawk County, IA ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Black Hawk, IA.	17 ZIP Codes (9 General, 3 PO Box, 1 Unique, & 4 Multi County) [More Details]
Area Code: The Telephone Area Code that are associated with Black Hawk, 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 Black Hawk, 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.	131,144 [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.	19013
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.	Waterloo-Cedar Falls, IA
Land Area: The approximate amount of land area covered by Black Hawk, 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.	566 square miles
Water Area: The approximate amount of water area covered by Black Hawk, 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.	7 square miles
Coordinates: The latitude/longitude centroid coordinates for Black Hawk County, IA.	-92.308829, 42.470093
Quick Link: Copy the direct link to the Black Hawk, IACounty page and use anywhere you like!	https://www.zip-codes.com/county/ia-black-hawk.asp

Black Hawk, IA ZIP Code Boundaries

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Black Hawk County, IA Covers 17 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 50613	General	Cedar Falls	43,667	33.30%
ZIP Code 50614	Unique	Cedar Falls	0	0.00%
ZIP Code 50623	P.O. Box	Dewar	146	0.11%
ZIP Code 50626	General	Dunkerton	1,652	1.26%
ZIP Code 50629 *	General	Fairbank	2,288	--
ZIP Code 50634	P.O. Box	Gilbertville	795	0.61%
ZIP Code 50643	General	Hudson	2,819	2.15%
ZIP Code 50647 *	General	Janesville	1,989	--
ZIP Code 50648 *	General	Jesup	3,992	--
ZIP Code 50651	General	La Porte City	3,579	2.73%
ZIP Code 50667	General	Raymond	759	0.58%
ZIP Code 50669 *	General	Reinbeck	2,335	--
ZIP Code 50701	General	Waterloo	29,806	22.73%
ZIP Code 50702	General	Waterloo	20,447	15.59%
ZIP Code 50703	General	Waterloo	18,913	14.42%
ZIP Code 50704	P.O. Box	Waterloo	0	0.00%
ZIP Code 50707	General	Evansdale	7,708	5.88%

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

Important Black Hawk, IA Information

Black Hawk County, IA Covers 17 ZIP Codes. This includes 9 General ZIP Codes, 3 PO Box ZIP Codes, and 1 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 Black Hawk County.

The population for Black Hawk County is 131,144, according to the U.S. Census. Population Density is 231.70 persons per square mile. With 58,559 Housing Units, the Average Household Size is 2.34 persons. There are 54,223 Family Households with an Average Family Size of 3.08 persons. 3.83% of the population is without Health Insurance. The 63.35% Employment Rate is 3.55% above the national average of 59.8%.83,097 people aged 25+ have some educational achievement, with 30.14% (or 25,043 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

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

Black Hawk is part of the Waterloo-Cedar Falls, IA Core Based Statistical Area (CBSA). Its CBSA Code is 47940.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 Black Hawk, IA have 55,467 Residential mailboxes and 3,518 Business mailboxes.There are 3,120 businesses with a total of 62,547 employees. That is an average of 20.0 employees per business. Annual payroll for these businesses is $3,411,818,000. Other Demographics

Black Hawk County Demographic Profile

Population & People

Total Population

131,144

Income

Median Household Income

$64,581

Housing

Total Housing Units

58,559

Health

Without Healthcare Coverage

3.83%

Business & Economy

Total Businesses

3,120

Families

Total Households

54,223

Employment

Employment Rate

63.35%

Education

Bachelor's Degree or Higher

30.14%

Total Population: Total number of people from the 2020 U.S. Census for Black Hawk, 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.	131,144
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Black Hawk, 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.	129,160
Total Households: Total number of Households from the 2020 U.S. Census for Black Hawk, IA. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	54,223
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.	58,559
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.	2.34
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.	3.08

Other Black Hawk Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	55,467
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	3,518
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.	65,260
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	43,092
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	7,934

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	3,120
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$796,936,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$3,411,818,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	62,547

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

References

U.S. Postal Service [Last Updated: 4/1/2025], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 4/1/2025], 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