Suffolk County Population Charts

According to the most recent Suffolk County New York demographics data available from the 2022 Census Bureau released in the American Community Survey in November of 2022, Figure 1 Suffolk County shows it has a Population 2021 of 1,522,998 which is the most of all counties in the greater Suffolk County region. Figure 3 uses the Suffolk County population data for a comparison of the population growth/population change estimates from the years 2010 to 2021 and Suffolk County New York depicts an increase of 29,648 (2%).

The total Suffolk County New York greater area population percent change for all areas for the years from 2010 to 2021 is shown in Figure 4 and for Suffolk County depicts it has a Population Change of 2.0% which is the third most population percent change of all other counties in the greater Suffolk County region.

Looking at the Suffolk County population density (measured as people per square mile) and providing comparisons to both the national and state average population density in Figure 5, Suffolk County New York depicts it has 1,670 people per square mile which is the second most people per square mile of all the counties in the greater Suffolk County region. The next lower population density is Fairfield County about 9.2% smaller with population density of 1,530. The county with the highest population density in the area is Nassau County which shows a people per square mile of 4,886 (approximately 2.9 times bigger). Figure 6 provides Suffolk County demographics for the overall median age for all people in the region and Suffolk County depicts it has a Median Age of 41.7 which is the third most median age of all other counties in the greater Suffolk County region. The county with the highest overall median age of all people in the area is Middlesex County which shows an age of 45.9 (10.1% larger). The Suffolk County New York population data for median age broken out by gender for both men versus the median age of women is shown in Figure 7. Suffolk County New York depicts a median age of men about 6.9% smaller as the median age of women. Figure 10 shows the Suffolk County New York Hispanic (including non Hispanic whites) population household ethnicity in the region and Suffolk County shows it has a Hispanic or Latino of 19.9% which is the second most Hispanic Population of all the counties in the greater Suffolk County region. Figure 11 compares the ratio of the amount of men to the amount of women and depicts total male population about the same size as the total female population.

Suffolk County Marital Status and Families Charts

Figure 12 shows the detailed marriage characteristics broken down by %residents who are married, never married, single, divorced, and widowed. Suffolk County has the percentage of never married percent the second smallest in order of total percent of people married of all the other counties in the metropolitan area at 9% of the total. Figure 14 compares the average household size using the average number of people in a family for Suffolk County households. Suffolk County shows it has a Family Size of 3.6 which is the highest of all counties in the greater Suffolk County region.

Figure 15 shows the overall ratio of Suffolk County households for families to the total number of Suffolk County households and that Suffolk County shows it has a Families of 73% which is the second most families percent of all the counties in the greater Suffolk County region. The county with the highest percent of people who are in a family in the area is Nassau County which depicts a families percent of 77% (6.1% larger).

Looking at Suffolk County households that are headed by a husband and wife as a percent of all families in Figure 16, Suffolk County shows it has a Married-couple family of 78% which is the third most husband and wife family percent of all other counties in the greater Suffolk County region. The county with the highest percent of people in a husband and wife family in the area is Middlesex County which shows a husband and wife family percent of 79% ( only slightly larger). Figure 17 shows Suffolk County demographics for the head of household for each place using a breakdown of married-couple, male-headed alone, and female-headed alone. Suffolk County New York has the percentage of households less than most other counties in the local area at 15.2% of the total.

Suffolk 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. Suffolk County shows it has a Birth Rate of 4.7% which is in the mid range of other counties in the greater region. The county with the highest percent of women who gave birth in the area is Nassau County which depicts a birth rate of 5.1% (8.4% larger). Figure 19 shows the breakdown of the mother's age for all baby births that occurred in the last 12 months and has the percentage of percent of births to mothers aged 15 to 19 less than most other counties in the greater region at 8% of the total. Second, it has the largest proportion of percent of births to mothers aged 25 to 29 at 38% of the total and is ranked #1.

In Figure 20, the demographic data for Suffolk County New York teenager birth rate is shown (women between the ages of 15 and 19.) Suffolk County shows it has a Teenager Birth Rate of 1% which is in the center range of other counties in the greater region. The county with the highest teenager birth rate in the area is Hartford County which depicts a births to a teenager of 2% (61.9% larger).

In Figure 21, the percentage of all births in the last 12 months to mothers that were unmarried is shown (unwed mothers.) Suffolk County shows it has a Unwed Births of 27% which is the third most percent of unwed women who have given birth of all other counties in the greater Suffolk County region. The county with the highest percent of unwed women who have given birth in the area is New Haven County which shows an unwed mother birth rate of 32% (18.4% larger).

The next chart, Figure 22, shows the percentage of unwed mothers who are also on public assistance. Suffolk County shows it has a Unwed birth and on public assistance of 1.9% which is the smallest as measured by percent of unwed women who have given birth and are on public assistance of all the other counties in the greater region. The county with the highest percent of unwed women who have given birth and are on public assistance in the area is New London County which shows a percent of unwed women who gave birth and are on public assistance of 25.9% ( substantially bigger).

Unwed mothers who have given birth in the last 12 months are also shown broken down by age group in Figure 24. Suffolk County New York has one of the largest proportions of unwed mothers aged 15 to 19 at 75.4% of the total and is ranked #3. Only #2 New Haven County (77.6%), and #1 New London County (86.1%) are larger. 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.) Suffolk County New York has the largest proportion of White unwed birth rate at 68.0% of the total and is ranked #1. Second, it has the smallest proportion of Black unwed birth rate at 36.6% of the total. Third, it has one of the largest proportions of Hispanic unwed birth rate at 7.1% of the total and is ranked #2. The only larger county being Fairfield County with 12.7%. Also, 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. Suffolk County New York has the percentage of unwed births and living below poverty level the second smallest as measured by percent of unwed births to mothers living below the poverty level of all the other counties in the metro area at 18.9% of the total. Second, it has the largest proportion of unwed births and living between 100% and 199% of poverty level at 62.7% 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 has the percentage of percent of unwed mothers with less than high school education the second smallest when sorted by percent of unwed mothers with less than high school education of all the other counties in the local area at 21% of the total. Second, it has the largest proportion of percent of unwed mothers who are a high school graduate or equivalent at 44% of the total and is ranked #1. Third, it has in the middle range of other counties in the local area in order of percent of unwed mothers with some college or an associates degree at 13% of the total.

Suffolk County Marital Status Charts

The next set of demographic data looks at the marital status for Suffolk County households which is useful for internet research. Figure 28 compares the total number of single people in each area. Suffolk County shows it has a Total Single People of 48% 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 New Haven County which depicts a percent single of 55% (13.8% larger). Comparing percent of people who are single for any reason to the United States average of 50%, Suffolk County is only about 4.2% smaller. Also, measured against the state of New York, percent of people who are single for any reason of 53%, Suffolk County is about 10.3% smaller.

Figure 30 compares the single people in each area broken down by never married, divorced, and widowed. Suffolk County New York has the percentage of percent never married the second smallest as measured by percent of people never married of all the other counties in the metropolitan area at 9% of the total. Second, it has one of the largest proportions of percent divorced at 6% of the total and is ranked #2. The only larger county being Nassau County with 6%. Figure 31 shows the demographics for the number of single men adults in each area broken out by never married, divorced and widowed. Suffolk County New York has the percentage of men who have never been married less than most other counties in the greater region at 7% of the total. Figure 32 shows the number of single women adults in each area broken out by never married, divorced and widowed. Suffolk County New York has the percentage of women who have never been married the second smallest as measured by percent of women who have never been married of all the other counties in the surrounding region at 10% of the total.

Figure 34 shows the Suffolk 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 Suffolk County metro area. Suffolk County New York has one of the largest proportions of single women 18 to 24 at 16% of the total and is ranked #2. The only larger county being Nassau County with 17%.

Suffolk County Citizenship Demographics Charts

The next chart (Figure 36) shows for all citizens what the original place of birth was for people who were born in a foreign country and has the percentage of birthplace in this state the second smallest as measured by percent of people born in the same state they currently live of all the other counties in the metropolitan area at 3% of the total.

In Figure 37, the demographic percentage of Suffolk County residents who were not born in the United States is shown (i.e. percent foreign born.) Suffolk County depicts it has a Percent Foreign Born of 15.5% which is the third most percent born outside United States of all other counties in the greater Suffolk County region. The county with the highest percent of population who was born in another country in the area is Nassau County which shows a percent born outside United States of 22.4% (44.4% larger). Comparing percent of population who was born in another country to the United States average of 13.6%, Suffolk County is 13.9% larger. Also, compared with the state of New York, percent of population who was born in another country of 22.5%, Suffolk County is approximately three-fourths the size.

Figure 39 provides a detailed analysis of non citizens by breaking them into two age groups: Under 18 and over the age of 18. Suffolk County New York depicts a percent of non citizens under 18 years old approximately a tenth 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 39.5 which is the third most of all other counties in the local area. The county with the highest median age of non citizens in the area is Nassau County which shows a median age of 42.2 (6.8% 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. it has the largest proportion of non citizens who entered the US between 1990 to 1999 at 20% of the total and is ranked #1.

Suffolk County Birthplace Demographic Charts

Figure 43 displays a map of the globe and shows Suffolk County demographic information for large regions of the world that people from this place originally came from. Suffolk County New York has the percentage of from Europe the second smallest when sorted by percent of people born in Europe of all the other counties in the local area at 17% of the total. Second, it has the second smallest as measured by percent of people born in Europe of all the other counties in the metropolitan area as measured by from Asia at 21% of the total. Third, it has less than most other counties in the greater region in order of from Africa at 3% of the total. Also, it has the largest proportion of from the Americas at 60% of the total and is ranked #1.

Figure 44 categorizes the location for where foreign born people originally come from based on very large continental geographic areas. Suffolk County New York has the largest proportion of from Oceania at 60% of the total and is ranked #1.

Figure 45 is a table that breaks out all the people who were foreign born by which large geographic region where they were born. Suffolk County New York has the smallest proportion of people who were born in South East Asia at 2.5% of the total. Second, it has the largest proportion of people who were born in Western Asia at 2.7% of the total and is ranked #1. Third, it has the largest proportion of people who were born in Central America at 24.8% of the total and is ranked #1.