Kirkland is generally regarded as a very safe place for solo female travelers. The crime rate is significantly lower than the national average, with incidents of violent crime being quite rare. The locals are friendly and willing to help, and the city is well-lit and well-policed. There are plentiful accommodation options that cater to females and the general respect for women is high. As always, it is advisable to exercise caution, especially during late hours, but overall, your safety should not be a concern when traveling solo in Kirkland.