When you're looking for a part time job, it makes sense to start with the job search engines and with the niche job sites that focus on part time and hourly jobs. You'll save some time searching, because all the jobs posted on these sites are for part time positions or you can narrow your search results to give you only part time job listings in your location.
Part time job listings, advice on finding a part time job, and information on the top companies that hire part time employees.
If you're interested in a seasonal part time job, CoolWorks lists thousands of summer and seasonal jobs.
There's nothing fancy or significantly searchable at Craig's List, but, that doesn't matter. The simple list of "real" jobs works. Click on the city that interests you, click on part-time (at the bottom of the list of job categories) and review the list of job openings.
Indeed includes job listings from hundreds of web sites including major job boards, top newspapers, as well as hundreds of associations and company career pages. Use the Advanced Search option, then select Part Time from the Show Jobs of Type list.
Monster's Hourly and Part Time Jobs database is searchable by keyword and location.

Image Copyright Indeed.comThe job search engines are an excellent source of part time job listings. When you use the Advanced Search options you'll be able to search by type of position and narrow the results to include only part time jobs listings. Here's how.
SimplyHired searches thousands of job boards, classifieds, and company sites. Click on Part Time jobs on the front page of the site or Select the Advanced Search option, then Part-Time from the Job Type list.
SnagAJob lists only hourly and part-time jobs, so, if you're not looking for a full-time job, it's an excellent site to use for job searching. You can search the over 100,000 jobs by zip code and sign-up to receive new job postings via email.