Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_29289372_1 ( population__2010_ VARCHAR, income_classification VARCHAR, city_municipality VARCHAR )

### Question ###
When itogon, benguet is the city/municipality and 1st class is the income classification how many measurements of population in 2010?

### Accurate SQL ###

SELECT COUNT(population__2010_) FROM table_29289372_1 WHERE income_classification = "1st Class" AND city_municipality = "Itogon, Benguet"