New Jersey is about 124 times smaller than Algeria.

Algeria is approximately 2,381,740 sq km, while New Jersey is approximately 19,211 sq km, making New Jersey 0.81% the size of Algeria. Meanwhile, the population of Algeria is ~44.2 million people (35.4 million fewer people live in New Jersey).
Tip: This to-scale comparison of Algeria vs. New Jersey uses the Mercator projection, which distorts the size of regions near the poles.