Find all the country tier 1 lists in this article. The image is a cover depicting the globe and having the title "tier 1 countries" with an orange background.

When budgeting for ad campaigns for international businesses, advertisers tend to prioritize their spending to Tier 1 countries. These are the most valuable countries due to their high purchasing power, and similar characteristics.

By advertising to high-tier countries, you are paying more per click but expect to also earn more back, compared to tier 2 and tier 3 countries.

See the complete tier list here.

Wealthiest countries, where the citizens have higher salaries and more disposable income. CPC in these countries is the most expensive, but expected returns are also the highest. 

Tier 1 countries include all english-speaking countries and advanced economies.

You can copy and paste all tier 1 countries to improve your targeting and segmentation to Google Adwords or any other Ad Network you are using:

Australia
Austria
Belgium
Canada
Denmark
Finland
France
Germany
Ireland
Italy
Luxembourg
Netherlands
New Zealand
Norway
Spain
Sweden
Switzerland
United Kingdom
United States of America

This is a table with all tier 1 countries for ad targeting purposes.