Polar Bears On Stamps, Covers And Cards.

Norway
Svalbard
February 22, 1996
Set of two stamps; one shows a polar bear.

Fortunately, the few stamps showing Polar Bears and Penguins living in the same area are rare as the picture.
Despite Artistic License, the bears are found only in the north; and, the birds are found only in the south.

Canada
50th Anniversary of Arctic Institute of North America
September 15, 1995
Set of five; one stamp shows Polar Bear (Ursus maritimus) and Caribou (Rangifer tarandus).
The Arctic Institute of North America is a multi-disciplinary research institute and educational organization located in the University of Calgary. The institute was created in 1945 as a non-profit membership organization, and also incorporated in the State of New York.

Norway
Svalbard
April 15, 2005
A holiday and leisure series depicting a polar bear in Svalbard.

Romania
Polar Fauna
December 12, 2007
Set of six, one stamp shows polar bear (Ursus maritimus).

Belgium
Preserve the Polar Regions and Glaciers
March 9, 2009
Set of two; one stamp shows a polar bear.

France
Endangered Species - Bears
March 21, 2014
One souvenir sheet containing four stamps; one shows polar bear (Ursus maritimus).

DDR (Germany)
Berlin Zoo
December 14, 1956
Set of six; one stamp shows a polar bear.
(Designer: Axel Bengs)

Kazakhstan
Preserve the Polar Regions and Glaciers
March 12, 2009
The stamp shows the official PPRG logo and a polar bear standing on an iceberg.

United Nations (New York)
World Environment Day
June 5, 2017
Set of two, one shows a polar bear on Baffin Island, Nunavut, Canada.
(Photographer: Michael S. Nolan)

France (UNESCO)
Polar Bears - UNESCO
Issued 10 December 2009

Belgium
Endangered animals
August 22, 2016
Set of five, one stamp depicts polar bear (Ursus maritimus).

Russian stamps made specifically for the Graf Zeppelin Polar flight.

Hungary
WWF - Iconic Animals
July 2, 2018
Set of four, one stamp depicts polar bear (Ursus maritimus)

Here are some polae bears from the tropical Pacific:




and here is my favorite polar bear picture, taken in 2016 in Munich Zoo.