Blue Rapids, Kansas
Blue Rapids is in northeast Kansas. It is near the junction of the Little Blue and Big Blue rivers, at .  Its elevation is  above sea level. It is on highway US-77/K-9. Blue Rapids is  east of Waterville,  south of the county seat Marysville,  west of Frankfort, and  north of Manhattan.  The United States Census Bureau says that the city has a total area of . Of that,  is land and  is water.