Where ISTJs (Logisticians) Stand Out

A scene representing the ISTJ personality type (Logistician). An elderly ISTJ man sits in a comfortable chair, enjoying a hot beverage. A book rests on a table beside him. The man is surrounded by towering bookshelves filled with neatly arranged books. A sleeping dog lies at the base of the shelves, symbolizing the ISTJ’s preference for a structured and orderly environment. The overall scene conveys a sense of responsibility, practicality, and dedication to maintaining systems and traditions.

ISTJs (Logisticians) make up 3.8% of test results in the average country, but their share varies from place to place. Here’s where they’re most and least common.

ISTJs by country

Colors compare each country’s share of ISTJs with the average country, where it’s 3.8%.

ISTJs by country
Country	How common
South Korea	10.7% (178% more common)
Singapore	6.3% (64% more common)
Jamaica	5.3% (38% more common)
Hong Kong	5.0% (30% more common)
New Zealand	4.9% (28% more common)
Thailand	4.9% (28% more common)
Trinidad and Tobago	4.9% (27% more common)
Canada	4.8% (25% more common)
Australia	4.8% (24% more common)
Russia	4.8% (24% more common)
Belarus	4.7% (23% more common)
Finland	4.7% (21% more common)
Luxembourg	4.6% (20% more common)
Ukraine	4.6% (19% more common)
Kazakhstan	4.6% (19% more common)
Vietnam	4.6% (18% more common)
South Africa	4.5% (18% more common)
Sweden	4.5% (18% more common)
Taiwan	4.5% (17% more common)
Kyrgyzstan	4.5% (17% more common)
Poland	4.5% (16% more common)
Latvia	4.5% (16% more common)
Armenia	4.5% (16% more common)
North Macedonia	4.4% (16% more common)
Malaysia	4.4% (14% more common)
United States	4.4% (14% more common)
Switzerland	4.4% (14% more common)
Estonia	4.4% (13% more common)
Norway	4.4% (13% more common)
Moldova	4.3% (12% more common)
United Kingdom	4.3% (12% more common)
Iran	4.3% (11% more common)
Laos	4.3% (11% more common)
Denmark	4.3% (11% more common)
Slovakia	4.2% (10% more common)
Brunei	4.2% (about as common)
Albania	4.2% (about as common)
Hungary	4.2% (9% more common)
Italy	4.2% (9% more common)
Belgium	4.2% (8% more common)
France	4.2% (8% more common)
Lithuania	4.2% (8% more common)
Slovenia	4.2% (about as common)
China	4.1% (7% more common)
Bulgaria	4.1% (6% more common)
Germany	4.0% (about as common)
Netherlands	4.0% (about as common)
Austria	3.9% (about as common)
Czech Republic	3.9% (about as common)
Cyprus	3.9% (about as common)
Costa Rica	3.9% (about as common)
Cambodia	3.9% (about as common)
Portugal	3.9% (about as common)
Greece	3.9% (about as common)
Azerbaijan	3.8% (about as common)
Georgia	3.8% (about as common)
Réunion	3.8% (about as common)
Brazil	3.8% (about as common)
Croatia	3.8% (about as common)
Macao	3.8% (about as common)
Ireland	3.8% (about as common)
Israel	3.7% (about as common)
Bosnia and Herzegovina	3.7% (about as common)
Chile	3.6% (5% less common)
Uruguay	3.6% (about as common)
Japan	3.5% (9% less common)
Puerto Rico	3.5% (about as common)
United Arab Emirates	3.4% (11% less common)
Serbia	3.4% (11% less common)
Romania	3.4% (12% less common)
Jordan	3.3% (13% less common)
Qatar	3.3% (13% less common)
Mongolia	3.3% (14% less common)
Palestine	3.3% (14% less common)
Paraguay	3.3% (14% less common)
Panama	3.3% (14% less common)
Argentina	3.3% (15% less common)
Uzbekistan	3.3% (15% less common)
Maldives	3.3% (15% less common)
Syria	3.2% (16% less common)
Guatemala	3.2% (16% less common)
Honduras	3.2% (16% less common)
El Salvador	3.2% (16% less common)
Algeria	3.2% (16% less common)
Nicaragua	3.2% (17% less common)
Dominican Republic	3.2% (18% less common)
Lebanon	3.1% (19% less common)
Mexico	3.1% (20% less common)
Spain	3.1% (20% less common)
Indonesia	3.0% (21% less common)
Kuwait	3.0% (22% less common)
Bahrain	3.0% (23% less common)
Egypt	3.0% (23% less common)
Libya	2.9% (24% less common)
Philippines	2.9% (26% less common)
Saudi Arabia	2.8% (26% less common)
Tunisia	2.8% (26% less common)
Morocco	2.8% (27% less common)
Colombia	2.7% (29% less common)
Ecuador	2.7% (30% less common)
Iraq	2.7% (30% less common)
Turkey	2.7% (31% less common)
Oman	2.6% (31% less common)
Venezuela	2.6% (31% less common)
Bolivia	2.5% (35% less common)
Peru	2.3% (39% less common)
Sri Lanka	2.1% (45% less common)
Bhutan	1.8% (54% less common)

Most common

South Korea (10.7%) +178%
Singapore (6.3%) +64%
Jamaica (5.3%) +38%
Hong Kong (5.0%) +30%
New Zealand (4.9%) +28%
Thailand (4.9%) +28%
Trinidad and Tobago (4.9%) +27%
Canada (4.8%) +25%
Australia (4.8%) +24%
Russia (4.8%) +24%

Least common

Bhutan (1.8%) −54%
Sri Lanka (2.1%) −45%
Peru (2.3%) −39%
Bolivia (2.5%) −35%
Venezuela (2.6%) −31%
Oman (2.6%) −31%
Turkey (2.7%) −31%
Iraq (2.7%) −30%
Ecuador (2.7%) −30%
Colombia (2.7%) −29%

Figures show where ISTJs are clearly more (↑) or less (↓) common than in the average country. Places with fewer test results need bigger differences to count.

ISTJs by U.S. state

Colors compare each state’s share of ISTJs with the U.S. as a whole, where it’s 4.4%.

ISTJs by U.S. state
State	How common
Wyoming	5.0% (15% more common)
Hawaii	4.9% (11% more common)
Alabama	4.8% (9% more common)
Kansas	4.7% (8% more common)
Virginia	4.7% (7% more common)
South Dakota	4.7% (about as common)
Washington	4.6% (6% more common)
Georgia	4.6% (6% more common)
Wisconsin	4.6% (about as common)
Tennessee	4.5% (about as common)
California	4.5% (about as common)
Maryland	4.5% (about as common)
North Dakota	4.5% (about as common)
Iowa	4.5% (about as common)
Oklahoma	4.5% (about as common)
Alaska	4.5% (about as common)
Illinois	4.5% (about as common)
West Virginia	4.5% (about as common)
Montana	4.4% (about as common)
South Carolina	4.4% (about as common)
Minnesota	4.4% (about as common)
Pennsylvania	4.4% (about as common)
Nebraska	4.4% (about as common)
Missouri	4.3% (about as common)
Washington, D.C.	4.3% (about as common)
Ohio	4.3% (about as common)
North Carolina	4.3% (about as common)
Texas	4.3% (about as common)
New York	4.3% (about as common)
Michigan	4.3% (about as common)
Oregon	4.3% (about as common)
Colorado	4.3% (about as common)
Arizona	4.3% (about as common)
New Hampshire	4.2% (about as common)
Kentucky	4.2% (about as common)
Indiana	4.2% (about as common)
New Jersey	4.2% (about as common)
Delaware	4.2% (about as common)
Louisiana	4.2% (about as common)
Massachusetts	4.2% (about as common)
New Mexico	4.2% (about as common)
Arkansas	4.2% (about as common)
Maine	4.2% (about as common)
Nevada	4.2% (5% less common)
Mississippi	4.1% (about as common)
Florida	4.1% (6% less common)
Rhode Island	4.0% (10% less common)
Connecticut	3.9% (10% less common)
Idaho	3.9% (11% less common)
Vermont	3.8% (14% less common)
Utah	3.6% (17% less common)

Most common

Wyoming (5.0%) +15%
Hawaii (4.9%) +11%
Alabama (4.8%) +9%
Kansas (4.7%) +8%
Virginia (4.7%) +7%

Least common

Utah (3.6%) −17%
Vermont (3.8%) −14%
Idaho (3.9%) −11%
Connecticut (3.9%) −10%
Rhode Island (4.0%) −10%

Figures show where ISTJs are clearly more (↑) or less (↓) common than in the U.S. as a whole. Places with fewer test results need bigger differences to count.

All personality types

Based on 127,869,638 test results. Want to use this data for research, or have a suggestion? Get in touch.

Where does this data come from?
From people who took our free personality test over 12 months, from October 2025 to September 2026. We only use anonymous totals, never anyone’s individual results.
What are places compared with?
Countries are compared with the “average country”: the average of all ranked countries, with each country counting equally – so countries where lots of people take the test don’t outweigh the rest. Regional maps, like Europe’s, use the average of that region’s ranked countries, and U.S. states are compared with the U.S. as a whole.
Which results count?
Each completed test counts once, so someone who takes it twice counts twice. We leave out tests that look skipped or automated, and we score every language version of the test the same way, so places can be compared fairly. A country needs at least 10,000 results – plus enough for its population – to be ranked and shown on our maps.
How do we compare places?
We compare each country’s share of ISTJs with the average country, and each state’s with the U.S. as a whole. Differences under 5%, or too small to be sure of, count as “about as common.”
Are the results representative?
Not exactly: people choose to take our test online, so test-takers aren’t a perfect cross-section of any country. Introverted, Intuitive, Feeling and Turbulent people are probably a little more common among them everywhere. Because that tilt affects every place in much the same way, comparing places still works. Where very few people take the test, we can’t be as sure, so we don’t rank or map those countries.
Is the test only in English?
No – it’s available in 48 other languages, and results from every language are included.