Bulk inserts into two (related) tables

I'm cleaning and formatting a 800-line data file to be inserted into a
database. Some of the input file fields will be inserted into an
'organizations' table letting postgres assign sequential org_id numbers.
Other fields will be inserted into a separate 'people' table associated with
each organization. The people table insert allows postgres to assign the
person_id number and this table's foreign key, people.org_id ==
organizations.org_id.

I could insert all new rows into the organizations table, then produce a
list of the org_id and org_name to manually insert the foreign key in the
related people table. Time and effort intense.

Is there a way to insert the two tables sequentially without manually adding
the organizations.org_id to the appropriate foreign key column (people.org_id)
of the people table?

Rich