18104 Zip Code Population and Demographics

In this article, we'll explore the population statistics for the zip code 18104, including popular demographics data like median age, number of households, household income, gender, employment and unemployment rates, occupations, religion, and more.

18104 is a zip code in Lehigh County, Pennsylvania, which covers Allentown, Lower Macungie, North Whitehall, Salisbury, South Whitehall, and Upper Macungie, with a total population of 45,959 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 18104 zip code. The most basic data is the total population, which is the total number of people living in 18104.

The estimated population of people living in 18104 is 45,959, with a median age of 38.7.

We can look back at data from previous years to see how the population in the 18104 area has changed over the last 5 years.

Year Population Change 5-Year Change
2021
45,959
+3.94%
+3.11%
2020
44,217
 -1.54% -
2019
44,908
+0.21%
-
2018
44,816
+0.55%
-
2017
44,572
 - -

Population of 18104 by Race and Ethnicity

How much has the race and ethnicity of the population in the 18104 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
68.9%
73.4%
 -6.13%
Black/African American
5.7%
4.1%
 +39.02%
Native
0.1%
0%
 0.00%
Hispanic
14.8%
14.6%
 +1.37%
Asian
7.2%
6.7%
 +7.46%
Hawaiian/Pacific Islander
0.1%
0%
 0.00%
Two Or More Races
2.8%
1.2%
 +133.33%
Other
0.5%
0.1%
 +400.00%

This data can be very important for anybody studying the 18104 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 18104 by Age and Gender

We can also monitor the change of the age and gender in the 18104 zip code to track track trends in the population over time.

We can see how the population in 18104 has changed over the last 5 years by median age as a total, and also by male and female.

Year Total Male Female
2021 38.7 +2.93% 38.2 +4.09% 39.3 +0.26%
2020 37.6 -4.33% 36.7 -2.39% 39.2 -4.16%
2019 39.3 -2.48% 37.6 -2.59% 40.9 -2.15%
2018 40.3 -0.74% 38.6 -1.28% 41.8 0%
2017 40.6 - 39.1 - 41.8 -

The median age of the 18104 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 18104 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 2,520 +2.79% 2,029 +19.22% 2,582 2,445
10 to 19 3,009 -2.44% 3,288 +1.97% 2,922 3,348
20 to 29 2,657 +4.25% 3,389 +5.54% 2,746 3,565
30 to 39 2,448 +22.09% 2,737 +12.19% 3,029 3,073
40 to 49 2,594 +5.91% 2,771 -11.4% 2,675 2,457
50 to 59 2,844 -24.14% 2,761 -5.02% 2,203 2,621
60 to 69 2,214 +13.55% 2,687 +11.95% 2,507 3,005
70+ 2,632 +7.72% 3,992 -0.9% 2,827 3,954

Median Household Income

The latest median household income for the 18104 zip code is $76,972.00.

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 18104.

  • Under 25
    $34,888.00
  • 25 to 44
    $96,009.00
  • 45 to 64
    $94,888.00
  • 65 and over
    $47,912.00

Average Household Income

Whenever we ask what is the average household income in the 18104 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 18104, 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 18104 is currently $98,944.00.

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.

8.32% of households in 18104 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 18104 against other zip codes.

  • Less than $24,999
    13.06%
  • $25,000 to $49,999
    17.93%
  • $50,000 to $74,999
    17.37%
  • $75,000 to $99,999
    14.22%
  • $100,000 to $149,999
    19.29%
  • $150,000 to $199,999
    9.82%
  • $200,000 or more
    8.32%

Per Capita Income

The per capita income in 18104 is $38,557.00.

Per capita income is the average income of a person in a given area. It is calculated by dividing the total income of 18104 by the total population of 18104.

This is different from the average or mean income because it includes and accounts for all people living in the 18104 area, including people like children, the elderly, unemployed people, retired people, and more.

Education Levels

We can also look at the education levels in 18104 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
    18.65%
  • Bachelor's degree
    36.49%
  • Some college or associate's degree
    7.33%
  • High school diploma or equivalent
    35.99%
  • Less than high school diploma
    1.54%

Employment

Employment rates are all based around the total population in 18104 that are over the age of 16.

Currently, the total population of the 18104 zip over the age of 16 is 37,813.

Of those people, a total of 61.50% 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 18104 is 57.80%.

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 18104 zip code.

Age Population Participation Unemployment Rate
16 to 19 years 3,151 45.60% 10.30%
20 to 24 years 3,530 73.80% 11.30%
25 to 29 years 2,781 79.40% 15.20%
30 to 34 years 2,934 86.60% 2.90%
35 to 44 years 5,671 86.40% 1.80%
45 to 54 years 4,977 85.30% 4.40%
55 to 59 years 2,476 76.70% 2.50%
60 to 64 years 2,905 64.20% 5.80%
65 to 74 years 4,844 26.20% 7.30%
75 years and over 4,544 6.40% 1.40%

Employment by Race

Another very interesting employment statistic we can look at is the employment and unemployment rates by race in 18104. 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 29,600 59.50% 4.90%
Black or African American 2,373 68.10% 7.20%
American Indian and Alaska Native 49 57.10% 0.00%
Asian 2,302 60.50% 4.90%
Native Hawaiian and Other Pacific Islander 24 8.30% 0.00%
Other 1,083 73.50% 9.30%
Two or more races 2,382 76.50% 14.10%
Hispanic or Latino 4,851 69.40% 14.00%
Not Hispanic or Latino 27,471 58.90% 4.10%

Occupations

In this section we can look at the most common occupations for people living in the 18104 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 18104 is 21,869, with median earnings of $48,118.00.

Women in 18104 are earning approximately 70.40% of the men's earnings.

Population Earnings
Total 21,869 $48,118.00
Male 11,005 $56,511.00
Female 10,864 $39,762.00

Occupations by Category

In the table below, we can break down the population and earnings for 18104 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 2,922 $64,640.00
Business and Financial 1,461 $64,583.00
Computer and Mathematical 675 $93,523.00
Architecture and Engineering 588 $91,000.00
Life, Physical, and Social Science 297 $59,880.00
Community and Social Service 484 $39,100.00
Legal 192 $71,250.00
Educational and Library 1,599 $50,809.00
Arts, Design, Entertainment, Sports, and Media 502 $42,738.00
Healthcare Practitioners 1,891 $74,805.00
Healthcare Support 787 $23,397.00
Firefighters and Protective Service 134 $28,846.00
Law Enforcement 39 $68,523.00
Food Preparation and Serving 1,120 $8,125.00
Building and Grounds Cleaning 392 $17,955.00
Personal Care and Service 574 $14,180.00
Sales 2,236 $37,833.00
Office and Administrative Support 2,610 $37,521.00
Farming, Fishing, and Forestry 19 $0.00
Construction and Extraction 548 $37,417.00
Installation, Maintenance, and Repair 355 $39,216.00
Production 929 $52,934.00
Transportation and Material Moving 790 $41,422.00

Occupations by Gender

Now we can also look at the occupations by category for 18104 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 18104.

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 1,955 $70,478.00 967 $63,782.00
Business and Financial 710 $69,571.00 751 $52,461.00
Computer and Mathematical 512 $97,875.00 163 $85,203.00
Architecture and Engineering 486 $92,125.00 102 $86,797.00
Life, Physical, and Social Science 187 $57,645.00 110 $165,792.00
Community and Social Service 216 $32,857.00 268 $58,269.00
Legal 131 $115,750.00 61 $43,472.00
Educational and Library 602 $64,375.00 997 $36,528.00
Arts, Design, Entertainment, Sports, and Media 167 $45,083.00 335 $42,718.00
Healthcare Practitioners 557 $164,659.00 1,334 $66,211.00
Healthcare Support 201 $23,901.00 586 $21,594.00
Firefighters and Protective Service 68 $103,191.00 66 $4,057.00
Law Enforcement 36 $68,182.00 3 $0.00
Food Preparation and Serving 401 $8,021.00 719 $8,906.00
Building and Grounds Cleaning 271 $22,404.00 121 $4,226.00
Personal Care and Service 181 $12,617.00 393 $20,552.00
Sales 974 $53,021.00 1,262 $22,571.00
Office and Administrative Support 557 $40,852.00 2,053 $36,841.00
Farming, Fishing, and Forestry 8 $0.00 11 $0.00
Construction and Extraction 537 $36,958.00 11 $0.00
Installation, Maintenance, and Repair 319 $39,343.00 36 $0.00
Production 749 $57,015.00 180 $33,750.00
Transportation and Material Moving 688 $42,059.00 102 $23,056.00

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 17,389 households in 18104, with an average household size of 2.44 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 11,009 families living in the 18104 zip code with an average family size of 3.03 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 18104:

Married Male Female Nonfamily
Total Households 8,185 781 2,043 6,380
Average Household Size 3.16 2.91 3.09 1.24
Total Families 8,185 781 2,043 0
Average Household Size 3.14 2.42 2.85 0

Poverty

Of the 11,009 families living in 18104, 4.10% are considered to be below the poverty threshold.

The table below shows the latest poverty thresholds in 18104:

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 18,072 housing units in 18104.

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

Total Percentage
Occupied 17,389 96.22%
Vacant 683 3.78%

27.57% of the total 18,072 housing units in 18104 are rental units. This is approximately 4,983 properties.

For owner-occupied housing units, a total of 12,207 are occupied by the owner - or 67.55% of the total.

Rental Rates

The median rent for a property in 18104 is $1,348.00.

In the chart below, we can look at the number of rental properties in 18104 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
    199
  • Less than $500
    378
  • $500 to $999
    871
  • $1,000 to $1,499
    1,884
  • $1,500 to $1,999
    1,288
  • $2,000 to $2,499
    187
  • $2,500 to $2,999
    132
  • $3,000 or more
    243

Property Value

The median value of a property in 18104 is $253,400.00.

Just like with rental rates, we can look at the number of properties in 18104 that fall into a particular value range.

  • Less than $50,000
    146
  • $50,000 to $99,999
    155
  • $100,000 to $149,999
    1,133
  • $150,000 to $199,999
    2,340
  • $200,000 to $299,999
    4,516
  • $300,000 to $499,999
    3,283
  • $500,000 to $999,999
    591
  • $1,000,000 or more
    43

Property Age

We can also look at the age of properties in 18104. The chart below shows the number of properties in 18104 that fall into a particular age range.

  • 1939 or earlier
    3,134
  • 1940 to 1949
    877
  • 1950 to 1959
    3,264
  • 1960 to 1969
    1,704
  • 1970 to 1979
    2,832
  • 1980 to 1989
    1,843
  • 1990 to 1999
    1,549
  • 2000 to 2009
    1,753
  • 2010 to 2013
    1,062
  • 2014 or later
    54

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 18104 that have a particular number of vehicles available.

  • No vehicles available
    898
  • 1 vehicle available
    6,047
  • 2 vehicles available
    7,158
  • 3 or more vehicles available
    3,286

Commuting to Work

In this section, we can also look at how people in 18104 get to work. The chart below shows the number of people in 18104 that commute to work in a particular way.

22.8 minutes is the average travel time to work for people in 18104.

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
    812
  • 5 to 9 minutes
    2,583
  • 10 to 14 minutes
    3,352
  • 15 to 19 minutes
    3,161
  • 20 to 24 minutes
    3,124
  • 25 to 29 minutes
    1,059
  • 30 to 34 minutes
    1,679
  • 35 to 39 minutes
    259
  • 40 to 44 minutes
    306
  • 45 to 59 minutes
    571
  • 60 to 89 minutes
    1,300
  • 90 or more minutes
    422

Summary

We've covered a LOT of demographic and population data for 18104 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 18104

If you want to see how the population and demographics of 18104 compare to other zip codes in Pennsylvania, check out the list of all Pennsylvania zip codes below: