java question!

I have a very big csv dataset,(400MB 100K rows)

Here is the example

STATE CODE	ZIP CODE	STATE ABBREVIATION	NAME	LATITUDE	LONGITUDE
25	2108	MA	BOSTON	71.06843	42.3576
36	10001	NY	NEW YORK CITY	73.99671	40.74838
42	19102	PA	PHILADELPHIA	75.16611	39.94891
24	21201	MD	BALTIMORE	76.6252	39.29463
11	20001	DC	WASHINGTON	77.01769	38.91222
37	28202	NC	CHARLOTTE	80.84186	35.229
13	30303	GA	ATLANTA	84.38885	33.7525
42	15112	PA	PITTSBURGH	79.83889	40.40358
39	43201	OH	COLUMBUS	83.00473	39.99516
18	46201	IN	INDIANAPOLIS	86.10935	39.77501
29	63101	MO	ST. LOUIS	90.19131	38.63462

.......................

I need to search the dataset, based on the users's input, maybe the muliple inputs,

So, i need to search the dataset, Which way is fastest, can i use binary search tree to do it??

Show code and explain, please help!!