Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_18600760_8 (county VARCHAR, pop__2010_ VARCHAR)
### Question:
Name the number of county for 90 population
### Answer:
SELECT COUNT(county) FROM table_18600760_8 WHERE pop__2010_ = 90