Military population of the US: 1.9 million - ON PAPER, in reality barely anything above one million of combat-ready

 

Demographics of the U.S. Military

Deployed around the world, the armed forces are a pillar of U.S. power and influence abroad. But many civilians are unfamiliar with their composition. How much does the military resemble U.S. society?

Last updated July 13, 2020
8:00 am (EST)

Today, women represent 16 percent of the enlisted forces and 19 percent of the officer corps.
Today, women represent 16 percent of the enlisted forces and 19 percent of the officer corps. Ismael Ortega/U.S. Air Force via Reuters

Introduction

The U.S. military has taken significant steps over the past decade to build a more diverse and inclusive force that attracts the country’s top talent. In particular, the services have opened more doors for women in recent years, ending restrictions on combat roles. However, women and racial and ethnic minorities remain underrepresented in parts of the military, particularly at the highest levels of leadership. The military has also opened its ranks to openly gay individuals, but it has maintained broad prohibitions on those who are transgender.

What are the military services?

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The organizational structure of the U.S. military is complex. The Department of Defense has three military departments—Army, Navy, and Air Force—but there are six armed services. The Army is organized within its own department, while the navy and Marine Corps both fall under the Department of the Navy, and the Air Force and the newly established Space Force are services within the Department of the Air Force.

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United States

U.S. Department of Defense

The Coast Guard is by law “a military service and a branch of the armed forces” but is part of the Department of Homeland Security. That is because the coast guard is predominately a law enforcement agency, although it does deploy with the navy and marine corps on certain missions. Collectively, the three maritime forces are sometimes called the sea services.

Additionally, there are seven reserve military forces [PDF], which will not be discussed here.

How big are the military services?

The United States ended the draft for military service in 1973, transitioning to the all-volunteer force that exists today. At that time, the active component of the military, excluding the coast guard, comprised 1.9 million men and women, or about 1 percent of the population. Now, there are about 1.3 million active-duty personnel, or less than one-half of 1 percent of the U.S. population.

The army is the largest U.S. military service, followed by the navy, air force, marine corps, and coast guard. The space force became its own branch of the armed services in late 2019 and is still developing.

Active-Duty Personnel by Service, 2018
A pie chart of active-duty personnel by service, showing the army as the largest service at 35%.

Coast Guard

(3%)

Marine Corps

(14%)

Army

(35%)

Total:

1.3M

Air Force

(24%)

Navy

(24%)

 

How old are service members?

The military, which has strict age limits, is younger than the civilian population, but the numbers differ significantly by service. The age ranges of the services vary most on the enlisted side: the coast guard tends to have older members, and marines tend to be younger. About 70 percent of enlisted marines are twenty-four years old or younger, compared with about 30 percent of enlisted coast guard members.

Age Distribution by Service, 2018
Age of active-duty commissioned officers and enlisted force
A bar chart of the age distribution of the services, showing the Marine Corps as the youngest service.

17–24

25–34

35–44

45+

Officers

0%

20%

40%

60%

80%

100%

Army

Navy

Marine Corps

Air Force

Coast Guard

Enlisted

0%

20%

40%

60%

80%

100%

Army

Navy

Marine Corps

Air Force

Coast Guard

Recruit age cutoffs

Marine Corps: 28

Navy: 34

Army: 35

Air Force: 39

Coast Guard: 39

 

How affluent are enlisted recruits?

Most members of the military come from middle-class neighborhoods. The middle three quintiles for household income were overrepresented among enlisted recruits, and the top and bottom quintiles were underrepresented.

Middle Class Overrepresented Among Recruits
Share of recruits by neighborhood income level
A chart showing the share of recruits by neighborhood income level, showing the middle class overrepresented.

Civilian

Share of recruits

benchmark

|

|

17%

$87,851 and over

21%

$66,598–$87,850

22%

$53,549–$66,597

21%

$41,692–$53,548

19%

Up to $41,691

10%

15%

20%

Notes: Income ranges represent the median household income quintiles for all U.S. census tracts. Each quintile includes 20 percent of the U.S. population. Coast Guard data not available.

 

Where are enlisted recruits from?

Enlisted military members come from all fifty states and the District of Columbia, but some contribute more than others. In absolute terms, the top five for recruitment in 2018 were California, Texas, Florida, Georgia, North Carolina, and New York, which is reflective of their relatively large populations.

Number of Enlisted Recruits, 2018
A map of the number of enlisted recruits by state, showing California with the largest number, followed by Texas with the second-largest.

Number of recruits

0–2K

2K–4K

4K–6K

6K

or more

AK

ME

California had the largest number of people enlist in the services, with 19,504 recruits.

VT

NH

ND

MN

IL

WI

MI

NY

RI

WA

ID

MT

MA

PA

NJ

CT

OR

NV

WY

SD

IA

IN

OH

KY

MD

DE

CA

UT

CO

NE

MO

WV

VA

Washington, DC, had the fewest recruits, at 93.

DC

NM

TN

KS

AZ

AR

NC

SC

AL

GA

OK

LA

MS

TX

FL

HI

At 18,670, Texas had

the second-largest

number of recruits.

Notes: Coast Guard data not available.

 

Another way of analyzing this data is to look at representation ratios, which show recruits as a share of a jurisdiction’s residents between the ages of eighteen and twenty-four. From this perspective, the picture is significantly different. A ratio of 1.0 means the jurisdiction’s share of recruits in 2018 was equal to its share of eighteen- to twenty-four-year-olds.

Representation of States Among Enlisted Recruits, 2018
Ratio of enlisted recruits to civilian 18–24 year olds
A map of the representation of states among enlisted recruits, showing Washington, DC, with the lowest representation ratio and South Carolina with the highest ratio.

Underrepresented

Overrepresented

0.5

0.7

0.9

1.1

1.3

1.5

AK

ME

VT

NH

ND

MN

IL

WI

MI

NY

RI

WA

ID

MT

MA

PA

NJ

CT

OR

NV

WY

SD

IA

IN

OH

KY

MD

DE

CA

UT

CO

NE

MO

WV

VA

Washington, DC, had the lowest ratio, at 0.3.

South Carolina had the largest, with 1.5.

DC

NM

TN

KS

AZ

AR

NC

SC

AL

GA

OK

LA

MS

TX

FL

HI

Notes: Coast Guard data not available.

 

South Carolina had the highest representation ratio, at 1.5, meaning it contributed 50 percent more than its share of the country's eighteen- to twenty-four-year-old population. Florida, Hawaii, Georgia, and Alabama round out the top five. On the other end of the spectrum—jurisdictions that contribute fewer recruits than their share of eighteen- to twenty-four-year-olds, or those with ratios less than 1.0—are Washington, DC, North Dakota, Massachusetts, Utah, and Rhode Island.

How racially and ethnically diverse is the military?

Federal agencies categorize race into five groups—white, Black or African American, American Indian or Alaska Native, Asian, and Native Hawaiian or other Pacific Islander. Ethnicity, which the government considers distinct from race, is divided into two categories: Hispanic or Latino, and not Hispanic or Latino. The racial and ethnic diversity of enlisted recruits varies considerably across the services and between genders.

Race and Ethnicity of Enlisted Recruits by Service and Gender, 2018
Hispanic, considered an ethnicity and not a race, overlaps with racial categories.
A bar chart of the racial and ethnic breakdown of recruits by service and gender, showing that in all the services, minority representation is higher among female recruits than among male recruits.

Hispanic, considered an ethnicity and not a race, overlaps with racial categories.

100%

80%

60%

40%

20%

0%

20%

40%

60%

80%

100%

Male

Female

Civilian labor force, 18–44

White

Black

Asian

Lines indicate the civilian labor force percentage as a point of comparison.

Hispanic

(ethnicity)

Army

In all the services, minority representation is higher among female recruits than among male recruits.

Among Army recruits, the portion of Black women is significantly higher than in the civilian labor force.

Navy

Marine Corps

Black men and women are underrepresented among Marine Corps recruits.

The Marines Corps is the only service in which Hispanic men and women are overrepresented among recruits.

Air Force

Coast Guard

The Coast Guard has the highest portion of white male and female recruits out of all the services.

Notes: Only the three largest racial categories were included—white, Black, and Asian. Numbers do not add to one hundred because of excluded groups and because Hispanic ethnicity is considered separately from race.

 

Racial diversity decreases at the upper echelons of the military. While the officer corps has similar levels of racial diversity as the general population, those with higher ranks—generals in the air force, army, and marine corps, and admirals in the coast guard and navy—are disproportionately white. There is an even greater ethnic disparity in the top ranks.

Race and Ethnicity by Rank, 2018
A bar chart of the racial and ethnic breakdown of the military by rank, showing that higher ranking officers are less diverse than the enlisted force.

Race

White

Black

Asian

Other

General/flag officers

All officers

Enlisted

U.S. (age 18–64)

0%

20%

40%

60%

80%

100%

Ethnicity

Non-Hispanic

Hispanic

General/flag officers

All officers

Enlisted

U.S. (age 18–64)

0%

20%

40%

60%

80%

100%

Notes: Hispanic, considered an ethnicity and not a race, overlaps with racial categories.

 

At what levels are women serving?

When the draft ended in 1973, women represented just 2 percent of the enlisted forces and 8 percent of the officer corps. Today, those numbers are 16 percent and 19 percent, respectively, a significant increase over the past half century.

Again, the numbers vary widely by service. Women accounted for about one-fifth of the officers in every military service except the marine corps, where they made up just 8 percent of the total. In the army, air force, and coast guard, the ratio of women officers was higher than that for women enlisted.

Women’s Representation by Service and Rank, 2018
Female representation among active-duty commissioned officers and enlisted force
A bar chart of the representation of women in each branch of service, showing the lowest representation in the Marine Corps.

Army

19%

Officers

14%

Enlisted

Navy

19%

Officers

20%

Enlisted

Marine Corps

8%

Officers

9%

Enlisted

Air Force

21%

Officers

20%

Enlisted

Coast Guard

23%

Officers

13%

Enlisted

 

Do LGBTQ+ individuals serve in the military?

The military does not report data on LGBTQ+ service members.

President Barack Obama’s administration allowed openly gay individuals to serve in the military with its repeal of the “Don’t ask, don’t tell” policy in 2010. Prior to that, gay, lesbian, and bisexual individuals could serve but were forced to conceal their sexual orientation.

In 2016, President Obama allowed transgender individuals to also serve openly in the armed forces, but the policy shift was later reversed by President Donald J. Trump. Today, the military does not accept transgender recruits, with few exceptions, but it allows those who entered between the 2016 decision and Trump’s reversal to continue to serve.

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