Somerset County Population Charts

According to the most recent Somerset County New Jersey demographics data available from the United States Census Bureau released in the American Community Survey in March of 2022, Figure 1 Somerset County depicts it has a Population 2020 of 330,151 which is the second smallest in terms of population of all the other counties in the area. The county with the highest population in the area is Middlesex County which shows a population of 825,015 (approximately 2.5 times bigger). Figure 3 uses the Somerset County population data for a comparison of the population growth/population change estimates from the years 2010 to 2020 and Somerset County New Jersey depicts an increase of 6,707 (2%).

The total Somerset County New Jersey greater area population percent change for all areas for the years from 2010 to 2020 is shown in Figure 4 and for Somerset County depicts it has a Population Change of 2.1% which is the second most of all the counties in the metro area.

Looking at the Somerset County population density (measured as people per square mile) and providing comparisons to both the national and state average population density in Figure 5, Somerset County New Jersey shows it has 1,094 people per square mile which is less than most other counties in the surrounding region. The next higher as measured by population density is Mercer County 49.8% larger with population density of 1,639. The county with the highest population density in the area is Essex County which shows a people per square mile of 6,328 ( appreciably bigger). Figure 6 provides Somerset County demographics for the overall median age for all people in the region and Somerset County shows it has a Median Age of 41.8 which is the third most median age of all other counties in the greater Somerset County region. The county with the highest overall median age of all people in the area is Hunterdon County which depicts an age of 46.6 (11.5% larger). The Somerset County New Jersey population data for median age broken out by gender for both men versus the median age of women is shown in Figure 7. Somerset County New Jersey depicts a median age of men about 6.2% smaller as the median age of women.

The next demographic analysis (Figure 8) looks at large generational Somerset County population groups (and can be useful internet research for employment related research or identifying areas with retirees). Key findings in this chart includes that Somerset County New Jersey has the percentage of people less than 20 years of age the second smallest when ranked by people less than 20 years of age of all the other counties in the local area at 11.3% of the total.

Figure 9 illustrates the overall diversity breakdown for Somerset County population and ethnicity groups in the area. (note: Hispanic/Latino is broken out separately in the next diagram and also the group denoted as Native ethnicity includes Native American, and Hawaiian and Other Pacific Islander.) Somerset County New Jersey has one of the largest proportions of Black population at 18.3% of the total and is ranked #2. The only larger county being Middlesex County with 24.5%. Second, it has less than most other counties in the area as measured by Native population at 7.7% of the total. Figure 10 shows the Somerset County New Jersey Hispanic (including non Hispanic whites) population household ethnicity in the region and Somerset County shows it has a Hispanic or Latino of 14.7% which is less than most other counties in the local area. Figure 11 compares the ratio of the amount of men to the amount of women and depicts total male population only about 4.5% smaller as the total female population.

Somerset County Marital Status and Families Charts

Figure 14 compares the average household size using the average number of people in a family for Somerset County households. Somerset County shows it has a Family Size of 3.3 which is less than most other counties in the local area. The county with the highest average family size in the area is Union County which depicts an average family size of 3.5 (only about 5.1% larger).

Figure 15 shows the overall ratio of Somerset County households for families to the total number of Somerset County households and that Somerset County shows it has a Families of 72% which is in the center range of other counties in the local area. The county with the highest percent of people who are in a family in the area is Hunterdon County which depicts a families percent of 74% (only about 2.9% larger).

Looking at Somerset County households that are headed by a husband and wife as a percent of all families in Figure 16, Somerset County shows it has a Married-couple family of 82% which is the third most of all other counties in the area. The county with the highest percent of people in a husband and wife family in the area is Hunterdon County which shows a husband and wife family percent of 87% (6.1% larger). Figure 17 shows Somerset County demographics for the head of household for each place using a breakdown of married-couple, male-headed alone, and female-headed alone. Somerset County New Jersey has the percentage of households less than most other counties in the local area at 13.6% of the total.

Somerset County Mothers and Children Charts

The next section of charts provide a detailed look at mothers and baby births that occurred over the past 12 months. Figure 18 shows the rate of women aged 15 to 50 years old who have given birth. Somerset County depicts it has a Birth Rate of 4.3% which is less than most other counties in the greater region. The county with the highest percent of women who gave birth in the area is Essex County which shows a birth rate of 5.4% (25.9% larger). Figure 19 shows the breakdown of the mother's age for all baby births that occurred in the last 12 months and it has one of the largest proportions of percent of births to mothers aged 15 to 19 at 11% of the total and is ranked #2. The only larger county being Mercer County with 16%. Second, it has the second smallest in order of percent of births to mothers aged 15 to 19 of all the other counties in the greater region as measured by percent of births to mothers aged 20 to 24 at 13% of the total.

In Figure 20, the demographic data for Somerset County New Jersey teenager birth rate is shown (women between the ages of 15 and 19.) Somerset County depicts it has a Teenager Birth Rate of 0% which is the second smallest when ranked by teenager birth rate of all the other counties in the metro area. The county with the highest teenager birth rate in the area is Hunterdon County which shows a births to a teenager of 3% ( very much bigger).

In Figure 21, the percentage of all births in the last 12 months to mothers that were unmarried is shown (unwed mothers.) Somerset County shows it has a Unwed Births of 17% which is less than most other counties in the greater region. The county with the highest percent of unwed women who have given birth in the area is Essex County which depicts an unwed mother birth rate of 39% (approximately 2.3 times bigger).

The next chart, Figure 22, shows the percentage of unwed mothers who are also on public assistance. Somerset County depicts it has a Unwed birth and on public assistance of 12.4% which is the second most percent of unwed women who gave birth and are on public assistance of all the counties in the greater Somerset County region. The county with the highest percent of unwed women who have given birth and are on public assistance in the area is Union County which depicts a percent of unwed women who gave birth and are on public assistance of 15.3% (23.2% larger).

Unwed mothers who have given birth in the last 12 months are also shown broken down by age group in Figure 24. Somerset County New Jersey has the largest proportion of unwed mothers aged 15 to 19 at 98.2% of the total and is ranked #1. Second, it has the smallest proportion of unwed mothers aged 20 to 34 at 1.8% of the total. Figure 25 shows the comparative demographic rate of unwed mothers who have given birth in the last 12 months are broken down by racial group (including the Hispanic birth rate.) Somerset County New Jersey has the percentage of White unwed birth rate less than most other counties in the area at 40.5% of the total. Second, it has one of the largest proportions of Black unwed birth rate at 52.2% of the total and is ranked #3. Only #2 Hunterdon County (60.3%), and #1 Mercer County (60.9%) are larger. Third, it has the largest proportion of Native Hawaiian unwed birth rate at 100.0% of the total and is ranked #1.

Figure 26 shows unwed mothers in poverty (based on median household income definition) who have given birth in the last 12 months. Somerset County New Jersey has the smallest proportion of unwed births and living below poverty level at 3.2% of the total. Second, it has the largest proportion of unwed births and living between 100% and 199% of poverty level at 44.7% of the total and is ranked #1.

For all births to unwed mothers, Figure 27 breaks down the education level of the mother by less than high school through college and post graduate attainment it has one of the largest proportions of percent of unwed mothers with less than high school education at 42% of the total and is ranked #3. Only #2 Morris County (50%), and #1 Hunterdon County (67%) are larger. Second, it has one of the largest proportions of percent of unwed mothers who are a high school graduate or equivalent at 32% of the total and is ranked #3. Only #2 Essex County (36%), and #1 Mercer County (44%) are larger. Third, it has the smallest proportion of percent of unwed mothers with some college or an associates degree at 2% of the total.

Somerset County Marital Status Charts

The next set of demographic data looks at the marital status for Somerset County households which is useful for internet research. Figure 28 compares the total number of single people in each area. Somerset County indicates it has a Total Single People of 43% which is less than most other counties in the local area. The county with the highest percent of people who are single for any reason in the area is Essex County which shows a percent single of 56% (29.6% larger). Comparing percent of people who are single for any reason to the United States average of 50%, Somerset County is about 15.5% smaller. Also, in comparison with the state of New Jersey, percent of people who are single for any reason of 48%, Somerset County is about 11.7% smaller.

Figure 30 compares the single people in each area broken down by never married, divorced, and widowed. Somerset County New Jersey has the percentage of percent never married the second smallest when ranked by percent of people never married of all the other counties in the greater region at 8% of the total. Second, it has the second smallest in order of percent of people never married of all the other counties in the surrounding region in order of percent divorced at 5% of the total. Figure 31 shows the demographics for the number of single men adults in each area broken out by never married, divorced and widowed. Somerset County New Jersey has the smallest proportion of men who have never been married at 6% of the total.

Figure 33 shows the Somerset County demographics for the ratio of the number of single men between the age of 18 and 65, in each area, broken down by age group for the Somerset County metro area. Somerset County New Jersey has the percentage of single men 30 to 34 the second smallest when ranked by percent of single men 18 to 24 of all the other counties in the greater region at 6% of the total.

Figure 34 shows the Somerset County population data for the ratio of the number of single women between the age of 18 and 65, in each area, broken down by age group for the Somerset County metro area. Somerset County New Jersey has the percentage of single women 25 to 29 the second smallest in terms of percent of single women 18 to 24 of all the other counties in the metropolitan area at 8% of the total. Second, it has the smallest proportion of single women 35 to 39 at 5% of the total.

Somerset County Citizenship Demographics Charts

The next section of demographic information provides detailed data Somerset County residents including: immigrants, citizenship, immigration, country of origin, non citizens and more. To start, Figure 35 shows a high level view of citizenship. Somerset County New Jersey has one of the largest proportions of citizens born In US at 16% of the total and is ranked #3. Only #2 Union County (16%), and #1 Middlesex County (19%) are larger.

In Figure 37, the demographic percentage of Somerset County residents who were not born in the United States is shown (i.e. percent foreign born.) Somerset County depicts it has a Percent Foreign Born of 25.9% which is in the mid range of other counties in the area. The county with the highest percent of population who was born in another country in the area is Middlesex County which shows a percent born outside United States of 32.9% (27.1% larger). Comparing percent of population who was born in another country to the United States average of 13.5%, Somerset County is about twice as large. Also, measured against the state of New Jersey, percent of population who was born in another country of 22.7%, Somerset County is 14.2% larger.

Figure 39 provides a detailed analysis of non citizens by breaking them into two age groups: Under 18 and over the age of 18. Somerset County New Jersey depicts a percent of non citizens under 18 years old approximately an eigth the size as the percent of non citizens over 18 years old. Figure 40 provides further information for non citizen age by showing a comparison of the median age for all non citizens immigrants. it has a Non Citizen Median Age of 38.8 which is the third most median age of non citizens of all other counties in the greater Somerset County region. The county with the highest median age of non citizens in the area is Morris County which shows a median age of 39.3 ( only slightly larger). The next diagram (Figure 41) shows the year of entry that non citizens entered the United States. The year of entry can show the rate of flow at various points of time in the past for when they entered the U.S. has the percentage of non citizens who entered the US before 1990 less than most other counties in the metro area at 7% of the total.

Somerset County Birthplace Demographic Charts

Figure 43 displays a map of the globe and shows Somerset County demographic information for large regions of the world that people from this place originally came from. Somerset County New Jersey has one of the largest proportions of from Asia at 50% of the total and is ranked #2. The only larger county being Middlesex County with 54%. Second, it has less than most other counties in the local area in terms of from Africa at 4% of the total. Third, it has less than most other counties in the metro area in order of from the Americas at 31% of the total.

Figure 44 categorizes the location for where foreign born people originally come from based on very large continental geographic areas. Somerset County New Jersey has one of the largest proportions of from Europe at 50% of the total and is ranked #2. The only larger county being Middlesex County with 54%. Second, it has less than most other counties in the local area as measured by from Oceania at 31% of the total.

Figure 45 is a table that breaks out all the people who were foreign born by which large geographic region where they were born. Somerset County New Jersey has the largest proportion of people who were born in Eastern Asia at 14.1% of the total and is ranked #1. Second, it has the largest proportion of people who were born in the Middle African Region at 0.7% of the total and is ranked #1.