Country rankings

United States Allies

Sweden has the highest Year Joined NATO (2,024), followed by Finland (2,023) and North Macedonia (2,020). Iceland has the lowest (1,949).

Politics & Government103 countries · 4 metricsUpdated Mar 3, 2026Original page
5 sources
32 of 235 countries
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Year Joined NATO

Darker means higher. Click a place to highlight it.

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All 32 ranked

Highest first.

Distribution Median and middle halfThe median is the middle value: half of places are above it, half below. The middle half is the range holding the central 50% of places.More in the glossary →

Each dot is one country; the lines mark the median and the middle half.

Median
1,991
Middle half 1,949 – 2,004
Average
1,980
32 countries
Highest
2,024
Sweden
Lowest
1,949
Iceland

Data

Click a column to sort, a row to highlight that place on the charts.

32 countries · # = rank by Year Joined NATO
#
1Sweden2,024
2Finland2,023
3North Macedonia2,020
4Montenegro2,017
5Croatia2,009
5Albania2,009
7Romania2,004
7Bulgaria2,004
7Slovakia2,004
7Lithuania2,004
7Slovenia2,004
7Latvia2,004
7Estonia2,004
14Poland1,999
14Czechia1,999
14Hungary1,999
17Spain1,982
18Germany1,955
19Turkey1,952
19Greece1,952
21United States1,949
21United Kingdom1,949
21France1,949
21Italy1,949
21Canada1,949
21Netherlands1,949
21Belgium1,949
21Portugal1,949
21Denmark1,949
21Norway1,949
21Luxembourg1,949
21Iceland1,949

What correlates with Year Joined NATO?

Pearson r against 2,018 other country metrics sharing at least 20 countries. Correlation is not causation.

Higher together

Places that have a higher Year Joined NATO tend to score higher on these

  1. B+ Blood TypeBlood Type by Country
    r = +0.78 · very strong · n = 31
    Plot
  2. Hypertension Age-Standardized Prevalence Adults 30-79Hypertension Rates by Country
    r = +0.76 · very strong · n = 32
    Plot
  3. AB+ Blood TypeBlood Type by Country
    r = +0.75 · very strong · n = 31
    Plot
  4. Hypertension Crude Prevalance Adults 30-79Hypertension Rates by Country
    r = +0.75 · very strong · n = 32
    Plot
  5. % With Near BlindnessBlind Population by Country
    r = +0.75 · very strong · n = 32
    Plot
  6. Hypertension Crude Prevalence Females 30-79Hypertension Rates by Country
    r = +0.74 · very strong · n = 32
    Plot

Opposite directions

Places that have a higher Year Joined NATO tend to score lower on these

  1. COVID Vaccination RateCOVID Vaccines by Country
    r = −0.72 · very strong · n = 31
    Plot
  2. O+ Blood TypeBlood Type by Country
    r = −0.72 · very strong · n = 31
    Plot
  3. % of Population Given at Least 1 Dose COVID Vacc.COVID Vaccines by Country
    r = −0.70 · very strong · n = 31
    Plot
  4. Syphilis RateSTD Rates by Country
    r = −0.69 · strong · n = 31
    Plot
  5. % of Population Who Took 1 or More COVID BoosterCOVID Vaccines by Country
    r = −0.69 · strong · n = 29
    Plot
  6. Corporate Tax RateCorporate Tax Rates by Country
    r = −0.69 · strong · n = 32
    Plot

Quick answers

Which country has the highest Year Joined NATO?
Sweden has the highest Year Joined NATO, at 2,024, followed by Finland (2,023) and North Macedonia (2,020).
Which country has the lowest Year Joined NATO?
Iceland has the lowest Year Joined NATO, at 1,949.
What is the median Year Joined NATO across countries?
The median is 1,991 across the 32 countries with data.
Where does this united states allies data come from?
Rankodex compiles it from World Population Review and the primary sources it cites: Member states of NATO - Wiki; U.S. is seen as a top ally in many countries - Pew Research Center; Major non-NATO ally - Wiki; NATO’s partnerships - North Atlantic Treaty Organization.