51001 Zip Code Population and Demographics

In this article, we'll explore the population statistics for the zip code 51001, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

51001 is a zip code in Plymouth County and Union County, Iowa, which covers Johnson, Portland, Preston, Westfield, Sioux Valley, and Spink, with a total population of 2,254 people.

We are using the latest American Community Survey (ACS) 5-Year survey data from the US Census Bureau, which is accurate up to 2021.

Table of Contents

Population

There is a lot of data that lets us see how many people live in the 51001 zip code. The most basic data is the total population, which is the total number of people living in 51001.

The estimated population of people living in 51001 is 2,254, with a median age of 41.3.

We can look back at data from previous years to see how the population in the 51001 area has changed over the last 5 years.

Year Population Change 5-Year Change
2021
2,254
+4.01%
-1.31%
2020
2,167
 -7% -
2019
2,330
+0.04%
-
2018
2,329
+1.97%
-
2017
2,284
 - -

Population of 51001 by Race and Ethnicity

How much has the race and ethnicity of the population in the 51001 zip code changed? The US Census Bureau gives us a few defined types that the population is broken down into.

Let's look at the total numbers and also the change over the last 5 years.

Race 2021 2017 Change
White
91.3%
94.4%
 -3.28%
Black/African American
0.1%
0%
 0.00%
Native
2.3%
0%
 0.00%
Hispanic
4.6%
5.2%
 -11.54%
Asian
0%
0%
 0.00%
Hawaiian/Pacific Islander
0%
0%
 0.00%
Two Or More Races
1.8%
0.4%
 +350.00%
Other
0%
0%
 0.00%

This data can be very important for anybody studying the 51001 zip for a number of reasons, including social and economic research, planning and development, and marketing to a multi-cultural population.

Note that the Native group includes both Native American and Alaskan Native people.

Population of 51001 by Age and Gender

We can also monitor the change of the age and gender in the 51001 zip code to track track trends in the population over time.

We can see how the population in 51001 has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 41.3 +2.99% 43.2 +7.2% 39.4 -1.25%
2020 40.1 0% 40.3 -0.74% 39.9 +0.25%
2019 40.1 -8.03% 40.6 -7.94% 39.8 -6.57%
2018 43.6 -5.42% 44.1 -3.92% 42.6 -8.39%
2017 46.1 - 45.9 - 46.5 -

The median age of the 51001 zip gives you an idea of the age distribution, with half of the population being older than the median age and half being younger.

This can then be used to infer and compare against birth rates, parent ages, and more metrics to understand the population. For example, an increasing median age indicates an aging population in the 51001 area, which can be a sign of a declining population in terms of birth rates and workforce participation.

Age 2021 2017
(Years) Male Female Male Female
0 to 9 133 -5.78% 139 +4.03% 122 144
10 to 19 151 -22.86% 176 +22.34% 114 211
20 to 29 82 +23.99% 59 +28.82% 98 74
30 to 39 91 +49.62% 163 +22.9% 143 200
40 to 49 178 -10.62% 83 +34.8% 153 111
50 to 59 157 -56.44% 171 -6.5% 80 154
60 to 69 128 +26.99% 155 -8.38% 162 139
70+ 173 -8.43% 245 -15.57% 145 204

Median Household Income

The latest median household income for the 51001 zip code is $57,169.00.

In simple terms, the median income is the middle income of a group of people. Half of the people in the group make more than the median income, and half make less.

The median income is a good indicator of the overall income of a group of people, and can be used to compare against other metrics such as the average income, per capita income, and more.

Median Income by Age

We can also look at the median income by age to see how the median income varies by age, and how it compares to the overall median income for 51001.

  • Under 25
    $48,333.00
  • 25 to 44
    $73,421.00
  • 45 to 64
    $59,931.00
  • 65 and over
    $40,313.00

Average Household Income

Whenever we ask what is the average household income in the 51001 zip code, we are actually talking about the mean household income.

This is calculated by adding up all the incomes of all the households in 51001, and then dividing that number by the total number of households.

This is a good way to get a general idea of the average income of a group of people, but it can be skewed by a very high or very low incomes.

The average household income of 51001 is currently $75,789.00.

In terms of accurately summarizing income at a geographic level, the median income is a better metric than the average income because it isn't affected by a small number of very high or very low incomes.

If you had an area where the average income was greater than the median, it can mean that there is significant income inequality, with income being concentrated in a small number of wealthy households.

3.60% of households in 51001 are classed as high income households (making $200,000+ per year).

Household Income Tiers

The US Census Bureau divides households into income tiers based on the median income for the area. This is a good way to compare the income of 51001 against other zip codes.

  • Less than $24,999
    20.95%
  • $25,000 to $49,999
    23.60%
  • $50,000 to $74,999
    20.11%
  • $75,000 to $99,999
    13.23%
  • $100,000 to $149,999
    14.92%
  • $150,000 to $199,999
    3.60%
  • $200,000 or more
    3.60%

Per Capita Income

The per capita income in 51001 is $32,096.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of 51001 by the total population of 51001.

This is different from the average or mean income because it includes and accounts for all people living in the 51001 area, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in 51001 to see how many people have a high school degree, a bachelor's degree, or a graduate degree.

Educational attainment is a good indicator of the overall education level of a population, and can be used to compare against other metrics such as the average income, per capita income, and more to see how education levels affect income, unemployment rates, and more.

  • Master's degree or higher
    7.16%
  • Bachelor's degree
    31.13%
  • Some college or associate's degree
    19.14%
  • High school diploma or equivalent
    38.94%
  • Less than high school diploma
    3.62%

Employment

Employment rates are all based around the total population in 51001 that are over the age of 16.

Currently, the total population of the 51001 zip over the age of 16 is 1,749.

Of those people, a total of 66.80% are working or actively looking for work. This is called the labor force participation rate.

The participation rate is a useful market measure because it shows the relative amount of labor resources available to the economy.

The employment to total population rate in 51001 is 65.00%.

Employment by Age

We can look at the employment rates by age to see how it compares to the overall employment rate. Here's how that breaks down for the 51001 zip code.

Age Population Participation Unemployment Rate
16 to 19 years 86 62.80% 0.00%
20 to 24 years 77 100.00% 0.00%
25 to 29 years 95 100.00% 0.00%
30 to 34 years 200 89.50% 14.50%
35 to 44 years 253 97.60% 1.60%
45 to 54 years 251 79.30% 0.00%
55 to 59 years 137 65.00% 0.00%
60 to 64 years 168 79.20% 0.00%
65 to 74 years 177 46.30% 3.70%
75 years and over 305 4.60% 0.00%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in 51001. The table below shows the rates for each of the ethnicity groups types defined by the US Census Bureau (which we mentioned earlier in this article).

Age Population Participation Unemployment Rate
White 1,658 67.60% 0.60%
Black or African American 2 0.00% 0.00%
American Indian and Alaska Native 47 14.90% 0.00%
Asian 0 0.00% 0.00%
Native Hawaiian and Other Pacific Islander 0 0.00% 0.00%
Other 26 100.00% 100.00%
Two or more races 16 100.00% 0.00%
Hispanic or Latino 103 66.00% 38.20%
Not Hispanic or Latino 1,581 68.20% 0.60%

Occupations

In this section we can look at the most common occupations for people living in the 51001 area as well as the gender breakdown and earnings of them.

The total population of civilian employees that are 16 years old or older in 51001 is 1,136, with median earnings of $36,833.00.

Women in 51001 are earning approximately 64.50% of the men's earnings.

Population Earnings
Total 1,136 $36,833.00
Male 618 $44,947.00
Female 518 $28,984.00

Occupations by Category

In the table below, we can break down the population and earnings for 51001 even further by occupation. The list of occupation categories below will show you how many people are employed in each category and the median earnings of each profession.

Occupation Employed Earnings
Management 168 $42,857.00
Business and Financial 33 $48,854.00
Computer and Mathematical 0 $0.00
Architecture and Engineering 39 $36,875.00
Life, Physical, and Social Science 0 $0.00
Community and Social Service 16 $30,833.00
Legal 0 $0.00
Educational and Library 53 $50,417.00
Arts, Design, Entertainment, Sports, and Media 20 $60,833.00
Healthcare Practitioners 73 $66,103.00
Healthcare Support 75 $23,281.00
Firefighters and Protective Service 0 $0.00
Law Enforcement 0 $0.00
Food Preparation and Serving 26 $9,583.00
Building and Grounds Cleaning 60 $36,324.00
Personal Care and Service 45 $16,118.00
Sales 125 $23,750.00
Office and Administrative Support 106 $33,333.00
Farming, Fishing, and Forestry 33 $43,125.00
Construction and Extraction 31 $40,417.00
Installation, Maintenance, and Repair 31 $57,188.00
Production 131 $39,750.00
Transportation and Material Moving 31 $34,375.00

Occupations by Gender

Now we can also look at the occupations by category for 51001 when it is broken down by male and female.

This lets us see how many male and females work in each occupation, the median earnings, and the male to female ratio of earnings for 51001.

That last metric is important because it can be used to look at the gender pay gap between men and women.

Occupation Male Female
Population Earnings Population Earnings
Management 96 $51,111.00 72 $38,864.00
Business and Financial 20 $49,583.00 13 $30,750.00
Computer and Mathematical 0 $0.00 0 $0.00
Architecture and Engineering 39 $36,875.00 0 $0.00
Life, Physical, and Social Science 0 $0.00 0 $0.00
Community and Social Service 0 $0.00 16 $30,833.00
Legal 0 $0.00 0 $0.00
Educational and Library 34 $70,476.00 19 $24,688.00
Arts, Design, Entertainment, Sports, and Media 11 $0.00 9 $0.00
Healthcare Practitioners 29 $65,875.00 44 $66,429.00
Healthcare Support 0 $0.00 75 $23,281.00
Firefighters and Protective Service 0 $0.00 0 $0.00
Law Enforcement 0 $0.00 0 $0.00
Food Preparation and Serving 19 $11,875.00 7 $8,958.00
Building and Grounds Cleaning 35 $35,515.00 25 $42,083.00
Personal Care and Service 8 $0.00 37 $16,645.00
Sales 36 $51,250.00 89 $19,213.00
Office and Administrative Support 18 $73,333.00 88 $31,000.00
Farming, Fishing, and Forestry 33 $43,125.00 0 $0.00
Construction and Extraction 31 $40,417.00 0 $0.00
Installation, Maintenance, and Repair 31 $57,188.00 0 $0.00
Production 109 $42,986.00 22 $35,833.00
Transportation and Material Moving 29 $34,792.00 2 $0.00

Households and Family Size

A household is defined by the US Census Bureau as a group of people who occupy a housing unit. A housing unit is a house, apartment, mobile home, group of rooms, or single room occupied as separate living quarters.

There are currently 945 households in 51001, with an average household size of 2.35 people.

A family is defined as a group of two or more people related by birth, marriage, or adoption who live together in the same household.

There are 629 families living in the 51001 zip code with an average family size of 2.86 people.

Households by Marital Status

The four categories of household by marital status are:

  • Married-couple family
  • Male householder with no spouse present
  • Female household with no spouse present
  • Nonfamily household

The table below shows the total number of households and families, with the average sizes of each, that live in 51001:

Married Male Female Nonfamily
Total Households 485 46 98 316
Average Household Size 2.97 2.74 2.91 1.16
Total Families 485 46 98 0
Average Household Size 2.96 2.3 2.61 0

Poverty

Of the 629 families living in 51001, 5.70% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in 51001:

Household Size Poverty Threshold
1 Person $14,580.00
2 People $19,720.00
3 People $24,860.00
4 People $30,000.00
5 People $35,140.00
6 People $40,280.00
7 People $45,420.00
8 People $50,560.00

Housing

There are 1,018 housing units in 51001.

The table below shows the split between occupied and vacant units:

Total Percentage
Occupied 945 92.83%
Vacant 73 7.17%

24.36% of the total 1,018 housing units in 51001 are rental units. This is approximately 248 properties.

For owner-occupied housing units, a total of 674 are occupied by the owner - or 66.21% of the total.

Rental Rates

The median rent for a property in 51001 is $666.00.

In the chart below, we can look at the number of rental properties in 51001 that fall into a particular rent range. These can then be used to compare with other areas, or to see how they have changed over time.

  • No rent paid
    23
  • Less than $500
    22
  • $500 to $999
    210
  • $1,000 to $1,499
    16
  • $1,500 to $1,999
    0
  • $2,000 to $2,499
    0
  • $2,500 to $2,999
    0
  • $3,000 or more
    0

Property Value

The median value of a property in 51001 is $130,400.00.

Just like with rental rates, we can look at the number of properties in 51001 that fall into a particular value range.

  • Less than $50,000
    37
  • $50,000 to $99,999
    182
  • $100,000 to $149,999
    179
  • $150,000 to $199,999
    135
  • $200,000 to $299,999
    108
  • $300,000 to $499,999
    26
  • $500,000 to $999,999
    0
  • $1,000,000 or more
    7

Property Age

We can also look at the age of properties in 51001. The chart below shows the number of properties in 51001 that fall into a particular age range.

  • 1939 or earlier
    319
  • 1940 to 1949
    45
  • 1950 to 1959
    149
  • 1960 to 1969
    77
  • 1970 to 1979
    210
  • 1980 to 1989
    55
  • 1990 to 1999
    63
  • 2000 to 2009
    76
  • 2010 to 2013
    24
  • 2014 or later
    0

Vehicles per Household

The number of vehicles available per household can be a good indicator of the level of affluence in an area. The chart below shows the number of households in 51001 that have a particular number of vehicles available.

  • No vehicles available
    28
  • 1 vehicle available
    315
  • 2 vehicles available
    370
  • 3 or more vehicles available
    232

Commuting to Work

In this section, we can also look at how people in 51001 get to work. The chart below shows the number of people in 51001 that commute to work in a particular way.

26.1 minutes is the average travel time to work for people in 51001.

These commute times can be compared to other date like income and educational levels to see how they relate to each other and if there are any trends in the data that might suggest a correlation.

  • Less than 5 minutes
    198
  • 5 to 9 minutes
    109
  • 10 to 14 minutes
    47
  • 15 to 19 minutes
    60
  • 20 to 24 minutes
    57
  • 25 to 29 minutes
    46
  • 30 to 34 minutes
    123
  • 35 to 39 minutes
    101
  • 40 to 44 minutes
    90
  • 45 to 59 minutes
    127
  • 60 to 89 minutes
    46
  • 90 or more minutes
    16

Summary

We've covered a LOT of demographic and population data for 51001 in this article! Hopefully you have found it very useful in your research of the area.

If you use any of the data found on this page, please consider linking back to USPopulation.org as the source and if you have any feedback or data requests, click here to contact us.

States in 51001

If you want to see how the population and demographics of 51001 compare to other zip codes in Iowa, check out the list of all Iowa zip codes below: